72 Mining Sector jobs in South Africa

Mobile Physiotherapist – Mining Sector

Mpumalanga, Mpumalanga Placement Point

Posted today

Job Viewed

Tap Again To Close

Job Description

A well established company requires a mobile Physiotherapist in the mining sector DUTIES: Provide evidence-based physiotherapy assessments and treatments for musculoskeletal, occupational, and other related conditions Travel between sites (approx. 1500 km per week) ensuring timely arrival and full clinical days Maintain accurate patient records and communicate clearly with the broader health team Participate in wellness campaigns, injury prevention initiatives, and functional rehabilitation Collaborate closely with on-site doctors, dietitians, and other healthcare professionals to ensure integrated patient care Adapt physiotherapy approaches to different clinical settings and patient demographics within each site Educate patients and workers on movement, ergonomics, and injury prevention relevant to the mining industry Contribute to a positive, supportive, and health-promoting environment at each site REQUIREMENTS: Bachelors or Masters Degree in Physiotherapy Registered with the Health Professions Council of South Africa (HPCSA) and Malpractice Insurance Valid drivers license and access to a reliable, roadworthy vehicle Willingness to travel extensively across designated mining sites weekly Minimum 2 years experience (MSK/Occupational Health experience preferred) Excellent interpersonal and communication skills Strong clinical reasoning and treatment planning abilities Ability to work independently and manage time effectively Comfortable working in diverse environments and adaptable to site-specific needs Passionate about improving health outcomes in the mining community Desirable Qualities Previous experience in remote or mobile physiotherapy services Understanding of occupational health protocols and return-to-work processes Willingness to engage in continuous learning and development Resilience and flexibility to navigate the demands of site-based healthcare
This advertiser has chosen not to accept applicants from your region.

Mobile Physiotherapist – Mining Sector

Vereeniging, Gauteng Placement Point

Posted today

Job Viewed

Tap Again To Close

Job Description

A well established company requires a mobile Physiotherapist in the mining sector DUTIES: Provide evidence-based physiotherapy assessments and treatments for musculoskeletal, occupational, and other related conditions Travel between sites (approx. 1500 km per week) ensuring timely arrival and full clinical days Maintain accurate patient records and communicate clearly with the broader health team Participate in wellness campaigns, injury prevention initiatives, and functional rehabilitation Collaborate closely with on-site doctors, dietitians, and other healthcare professionals to ensure integrated patient care Adapt physiotherapy approaches to different clinical settings and patient demographics within each site Educate patients and workers on movement, ergonomics, and injury prevention relevant to the mining industry Contribute to a positive, supportive, and health-promoting environment at each site REQUIREMENTS: Bachelors or Masters Degree in Physiotherapy Registered with the Health Professions Council of South Africa (HPCSA) and Malpractice Insurance Valid drivers license and access to a reliable, roadworthy vehicle Willingness to travel extensively across designated mining sites weekly Minimum 2 years experience (MSK/Occupational Health experience preferred) Excellent interpersonal and communication skills Strong clinical reasoning and treatment planning abilities Ability to work independently and manage time effectively Comfortable working in diverse environments and adaptable to site-specific needs Passionate about improving health outcomes in the mining community Desirable Qualities Previous experience in remote or mobile physiotherapy services Understanding of occupational health protocols and return-to-work processes Willingness to engage in continuous learning and development Resilience and flexibility to navigate the demands of site-based healthcare
This advertiser has chosen not to accept applicants from your region.

Sales Director - Conveyor & Bulk Material Handeling Solutions -JHB - Mining Sector

Johannesburg, Gauteng SA Sales Fraternity

Posted 2 days ago

Job Viewed

Tap Again To Close

Job Description

Overview

Sales Director - Conveyor & Bulk Material Handling Solutions - JHB - Mining Sector

Position Overview

Our client, a certified and established manufacturer of conveyor and bulk material handling equipment, seeks a dynamic Sales Director to lead and scale their commercial footprint both locally and internationally. This is a strategic leadership role responsible for driving top-line revenue, managing a high-performance sales team, and aligning commercial operations with the client’s long-term vision for quality, service, and transformation.

Reporting Structure

The Sales Director will report directly to executive leadership and will have the following direct reports :

  • 2 × Internal Account Managers
  • 1 × Business Development Manager
  • 1 × International Sales Engineer
  • 7–8 × Business Development Executives
Key Responsibilities
  • Sales Strategy & Execution: Develop and execute integrated sales strategies aligned with the client’s business objectives and growth targets. Expand market share in South Africa and key international territories.
  • Team Leadership & Development: Lead, coach, and motivate a cross-functional sales team to achieve high performance. Drive a culture of accountability, learning, and inclusion in line with the client’s empowerment initiatives.
  • Client Relationship Management: Foster deep, long-term relationships with new and existing clients in the mining, industrial, and infrastructure sectors. Oversee high-level negotiations and client retention strategies.
  • Operational Alignment & Collaboration: Collaborate with production, technical, and service teams to deliver turnkey, high-quality conveyor solutions. Ensure alignment with ISO 9001:2015 and SABS-certified quality processes.
  • Market Development: Identify new business opportunities and develop entry strategies for untapped markets. Lead the client’s participation in trade expos, tenders, and strategic alliances.
  • Commercial Governance: Monitor sales performance metrics and provide regular reports to senior leadership. Manage forecasts, pipelines, pricing, and margin controls effectively.
  • Brand Stewardship & Transformation: Promote the client’s market reputation for service excellence, quality assurance, and transformation. Leverage the client’s Level 2 B-BBEE credentials and Black Women ownership status in business development efforts.
Required Qualifications & Experience
  • Education: Bachelor’s degree in Sales or Business. An MBA or equivalent postgraduate qualification is advantageous.
  • Experience: Minimum 8–12 years in senior sales or commercial roles within industrial manufacturing, mining supply, or material handling sectors.
  • Proven leadership of multi-tiered commercial teams including account managers, business developers, and technical sales engineers.
  • Strong track record in developing and closing large-scale sales contracts across domestic and international markets.
  • Technical & Commercial Skills: Knowledge of conveyor systems, bulk materials handling, and turnkey industrial equipment solutions.
  • Strategic thinker with strong business acumen and commercial negotiation skills.
  • Advanced proficiency in CRM platforms, sales reporting tools, and budgeting processes.
  • Alignment with quality standards, ISO systems, and transformation imperatives.
Personal Attributes
  • Strong leadership presence and emotional intelligence.
  • Excellent verbal, written, and presentation skills.
  • Resilient, target-driven, and adaptable to dynamic commercial environments.
  • Values integrity, diversity, and collaborative teamwork.
Remuneration & Benefits
  • Salary Package: R1,000,000 – R1,800,000 per annum (TCTC – negotiable based on experience)
  • Incentives: Performance-related bonuses and commissions may be applicable
  • Additional Benefits: Travel allowances / company vehicle
  • Training and personal development support

#J-18808-Ljbffr
This advertiser has chosen not to accept applicants from your region.

Senior Legal Advisor, 12 months FTC – South Africa, Mining Sector

Johannesburg, Gauteng Lewis International

Posted 21 days ago

Job Viewed

Tap Again To Close

Job Description

Introduction:

Interpret and translate legal requirements and effectively communicating these to the business and external stakeholders

Duties & Responsibilities:

Provide legal support and advice to upper management on relevant legal issues

Ensure compliance with the internal controls, statutory regulations and other formalities

Calculate and handle risks in business process and decision making

Draft legal documents such ascontracts, statements, agreements etc.

Execute procedures for protecting patents, trademarks, and industrial designs

Handle litigation

Keeping up with current changes on all relevant areas of laws and contributing to the enhancement of the knowledge base of the company’s legal function

Qualifications & Requirements:

LLB

Admitted Attorney

5 – 10 years PQE

Construction Law, Legal Counsel experience

Advice on FIDIC, JBCC, NEC contracts

Must have good understanding of construction processes

#J-18808-Ljbffr
This advertiser has chosen not to accept applicants from your region.

Sales Director - Conveyor & Bulk Material Handeling Solutions -JHB - Mining Sector

Johannesburg, Gauteng SA Sales Fraternity

Posted 16 days ago

Job Viewed

Tap Again To Close

Job Description

Position Overview: (Mining Sector)

Our client, a certified and established manufacturer of conveyor and bulk material handling equipment, seeks a dynamic Sales Director to lead and scale their commercial footprint both locally and internationally. This is a strategic leadership role responsible for driving top-line revenue, managing a high-performance sales team, and aligning commercial operations with the clients long-term vision for quality, service, and transformation.

Reporting Structure:

The Sales Director will report directly to executive leadership and will have the following direct reports:

  • 2 × Internal Account Managers
  • 1 × Business Development Manager
  • 1 × International Sales Engineer
  • 78 × Business Development Executives

Key Responsibilities:

  • Sales Strategy & Execution: Develop and execute integrated sales strategies aligned with the clients business objectives and growth targets. Expand market share in South Africa and key international territories.
  • Team Leadership & Development: Lead, coach, and motivate a cross-functional sales team to achieve high performance. Drive a culture of accountability, learning, and inclusion in line with the clients empowerment initiatives.
  • Client Relationship Management: Foster deep, long-term relationships with new and existing clients in the mining, industrial, and infrastructure sectors. Oversee high-level negotiations and client retention strategies.
  • Operational Alignment & Collaboration: Collaborate with production, technical, and service teams to deliver turnkey, high-quality conveyor solutions. Ensure alignment with ISO 9001:2015 and SABS-certified quality processes.
  • Market Development: Identify new business opportunities and develop entry strategies for untapped markets. Lead the clients participation in trade expos, tenders, and strategic alliances.
  • Commercial Governance: Monitor sales performance metrics and provide regular reports to senior leadership. Manage forecasts, pipelines, pricing, and margin controls effectively.
  • Brand Stewardship & Transformation: Promote the clients market reputation for service excellence, quality assurance, and transformation. Leverage the clients Level 2 B-BBEE credentials and Black Women ownership status in business development efforts.

Required Qualifications & Experience:

  • Education: Bachelors degree in Engineering, Sales, or Business. An MBA or equivalent postgraduate qualification is advantageous.
  • Experience:

- Minimum 812 years in senior sales or commercial roles within industrial manufacturing, mining supply, or material handling sectors.

- Proven leadership of multi-tiered commercial teams including account managers, business developers, and technical sales engineers.

- Strong track record in developing and closing large-scale sales contracts across domestic and international markets.

  • Technical & Commercial Skills:

- Knowledge of conveyor systems, bulk materials handling, and turnkey industrial equipment solutions.

- Strategic thinker with strong business acumen and commercial negotiation skills.

- Advanced proficiency in CRM platforms, sales reporting tools, and budgeting processes.

- Alignment with quality standards, ISO systems, and transformation imperatives.

Personal Attributes:

  • Strong leadership presence and emotional intelligence.
  • Excellent verbal, written, and presentation skills.
  • Resilient, target-driven, and adaptable to dynamic commercial environments.
  • Values integrity, diversity, and collaborative teamwork.

Remuneration & Benefits:

  • Salary Package: R1,000,000 R1,800,000 per annum (TCTC negotiable based on experience)
  • Incentives: Performance-related bonuses and commissions may be applicable
  • Additional Benefits:

- Travel allowances / company vehicle

- Training and personal development support

This advertiser has chosen not to accept applicants from your region.

Mining Operations Engineer

Noordwes, Western Cape Tumaini

Posted 6 days ago

Job Viewed

Tap Again To Close

Job Description

My client based in the North West is looking for a highly motivated and efficient Mining Operations Engineer to support their operations. The Engineer must ensure the integrity of all surface infra structures, fixed and moving machinery inclusive of all electrical machinery and equipment within the area of responsibility of the Mining Operation.

Be the discipline master and custodian of all matters relating to Trackless Mobile Machinery (TMM), pressure vessels, piping and valves. The primary focus is competent technical support in mechanical engineering with special emphasis on TMM in a major Open Pit environment.

The successful candidate must meet the following requirements :

  • Minimum of an Advance Diploma in Engineering
  • BSc. Mechanical Engineering qualification an advantageous.
  • Government Certificate of Competence Engineering (Mining)
  • Minimum of 10 years’ experience in mining production machinery, equipment and processes
  • 5 years as an appointed Engineer in an Open Pit environment.
  • Must be experienced in the functionality of mining machinery and equipment.

Correspondence will only be conducted with short listed candidates. Should you not hear from us within 3 days, please consider your application unsuccessful.

#J-18808-Ljbffr
This advertiser has chosen not to accept applicants from your region.

Senior Sales Representative | Industrial (Selling to Trucking, Mining, Engineering Sector)

Johannesburg, Gauteng TrudyQ Consulting

Posted 11 days ago

Job Viewed

Tap Again To Close

Job Description

Currently expanding their team and seeking a dynamic team player to drive growth and shape business development strategies within their specialized Industrial business unit. Your expertise and network will be instrumental in propelling this business unit towards new heights.

If you are passionate about making a significant impact in the Industrial Industry and thrive in a fast-paced, results-driven environment, we want to hear from you!

Minimum requirements :

  • Minimum 10 years experience in Business-to-Business Industrial Sales
  • Industrial Chemicals sales experience (advantageous)
  • Proven history and strong sales experience selling to the Industrial Markets in Trucking, Engineering & Mining
  • Strong Presentation and Negotiation Skills
  • Fully computer literate with advanced skills in Excel
  • Previous experience with CRM System Skynamo is an advantage
  • Extensive travelling within Gauteng, neighboring countries, and internationally (average 4-7 days overnight stays per month)
  • Fully bilingual (Afrikaans & English)
  • Own transport and valid driver’s license
  • Working hours: 07h30 - 16h30

Key Performance Areas :

  • Develop strong relationships and grow current customer portfolio (25% of duties)
  • Focus on new business development and growth of new distributors in new geographical areas
  • Provide product and sales training to distributor sales staff
  • Conduct sales and product training for logistics, mining, and engineering companies
  • Deliver presentations to new B2B customers
  • Maintain ongoing competitor and market research, stay updated on industry trends
  • Work towards monthly and annual sales revenue targets
  • Report directly to the Managing Director

In return, this opportunity offers :

  • Basic salary, vehicle allowance, company fuel card, and company cell phone
  • Incentives based on growth and achievements
#J-18808-Ljbffr
This advertiser has chosen not to accept applicants from your region.
Be The First To Know

About the latest Mining sector Jobs in South Africa !

Truck Driver - Mining Operations

Johannesburg, Gauteng Old Stone Group

Posted today

Job Viewed

Tap Again To Close

Job Description

Position Overview:

OSG Mining (Pty) Ltd is seeking experienced and safety-conscious Drivers to support our mining operations across Gauteng and surrounding regions. The successful candidates will be responsible for the safe, efficient, and timely transportation of minerals, materials, equipment, and personnel to and from mining sites.



Key Responsibilities:

Transport mineral loads (ore, aggregates, etc.) from mining sites to processing plants or stockpile locations.



Conduct daily vehicle inspections and report maintenance issues promptly.



Ensure compliance with road safety regulations, company policies, and mining site rules.



Keep accurate records of trips, fuel usage, and delivery logs.



Operate heavy-duty vehicles such as tipper trucks, flatbeds, or lowbed trailers as required.



Assist with basic loading and offloading when necessary.



Maintain cleanliness and operational readiness of assigned vehicles.



Requirements:

Valid South African driver’s license (Code 10 or Code 14) with valid Professional Driving Permit (PrDP).



Minimum of 3 years of driving experience in mining, construction, or heavy logistics sectors.



Knowledge of mining site safety protocols and haul road procedures.



Physically fit and able to work long hours, including occasional weekends or night shifts.



Good communication skills and professional conduct.



High level of reliability and accountability.



Advantages (Not Mandatory):

Experience operating in remote or high-risk environments.



Defensive driving training or mining transport certification.



Knowledge of mechanical systems or minor vehicle maintenance.



Benefits:

Competitive salary with overtime allowances



Site-based accommodation (if applicable)



Medical aid contribution



Career development and training opportunities



PPE and safety gear provided
This advertiser has chosen not to accept applicants from your region.

Expert Associate Director - Mining Operations

Johannesburg, Gauteng Boston Consulting Group (BCG)

Posted 18 days ago

Job Viewed

Tap Again To Close

Job Description

Overview

Expert Associate Director - Mining Operations at Boston Consulting Group (BCG).

Join to apply for the Expert Associate Director - Mining Operations role at Boston Consulting Group (BCG) .

What You'll Do

As an Expert Associate Director you will work exclusively in our Industrial Goods sector, helping our clients from metals & mining industry transform their portfolio, while building and contributing to BCG’s intellectual capital. Your role in projects can vary from team management to team advisor. You will leverage your expertise to add insight and drive clients toward recommendations, and you will be viewed as a trusted advisor by senior clients. You will help scope and structure the work, onboard team members, and guide the team throughout the project - actively contributing to both execution and content creation that drives client value. Expert Associate Directors contribute significantly to BCG’s intellectual capital, generate interest and excitement about their expertise area, and coach and mentor others. Your role will also involve developing an external profile, building your network of industry contacts to become a recognized thought leader in mining operations sector.

What You'll Bring
  • 10-15 years of experience in mining industry mainly in the operations function.
  • Deep understanding of mining operation function, industry trends globally and across the Africa such as market dynamics and strategic developments
  • Advising clients on operational challenges by applying your metals & mining expertise
  • Bachelor's degree in Engineering or Science from a leading undergraduate program preferred
  • Demonstrated expertise in project management and leadership to provide proficiency in prioritizing and balancing multiple project demands
  • Excellent analytical, and strategic thinking abilities to develop transformative solutions
  • Exceptional stakeholder management and communication skills to engage and align cross-functional teams
  • Adept at relationship building and client management across various levels.
  • Excellent verbal and written communication skills
  • Consulting experience, but not pre-requisites
Who You'll Work With

BCG’s Industrial Goods practice serves four broad industrial segments: Automotive & Mobility, Engineered Products & Infrastructure, Materials & Process Industries, and Transportation & Logistics. We help companies in these sectors think beyond the limits of their traditional business models, choose where and how they should add value, and reorganize to defend themselves against new threats and explore new opportunities.

Our Expert Consulting Track

The Expert Consulting Track (ECT) is vital to BCG’s ability to successfully meet our clients’ demand for deep expertise and advanced technical capabilities. Experts deliver next-level impact for BCG's most complex and cutting-edge client challenges. Experts focus on developing BCG's thought leadership, commercial capabilities, and intellectual property assets; and their work is essential to our delivery model. Working as part of a multidisciplinary team to bring the ‘best of BCG’ to our clients, Experts come from diverse backgrounds, with expertise often gained outside of BCG in industry, academia, or specialized consulting.

EEO and Employment Details

Boston Consulting Group is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, age, religion, sex, sexual orientation, gender identity / expression, national origin, disability, protected veteran status, or any other characteristic protected under national, provincial, or local law, where applicable, and those with criminal histories will be considered in a manner consistent with applicable state and local laws. BCG is an E - Verify Employer. Click here for more information on E-Verify.

Seniority level
  • Mid-Senior level
Employment type
  • Full-time
Job function
  • Management and Manufacturing
  • Industries
  • Business Consulting and Services

Referral information: Referrals increase your chances of interviewing at Boston Consulting Group (BCG) by 2x.

#J-18808-Ljbffr
This advertiser has chosen not to accept applicants from your region.

Expert associate director - mining operations

Johannesburg, Gauteng Boston Consulting Group

Posted 1 day ago

Job Viewed

Tap Again To Close

Job Description

permanent
Overview Expert Associate Director - Mining Operations at Boston Consulting Group (BCG). Join to apply for the Expert Associate Director - Mining Operations role at Boston Consulting Group (BCG) . What You'll Do As an Expert Associate Director you will work exclusively in our Industrial Goods sector, helping our clients from metals & mining industry transform their portfolio, while building and contributing to BCG’s intellectual capital. Your role in projects can vary from team management to team advisor. You will leverage your expertise to add insight and drive clients toward recommendations, and you will be viewed as a trusted advisor by senior clients. You will help scope and structure the work, onboard team members, and guide the team throughout the project - actively contributing to both execution and content creation that drives client value. Expert Associate Directors contribute significantly to BCG’s intellectual capital, generate interest and excitement about their expertise area, and coach and mentor others. Your role will also involve developing an external profile, building your network of industry contacts to become a recognized thought leader in mining operations sector. What You'll Bring 10-15 years of experience in mining industry mainly in the operations function. Deep understanding of mining operation function, industry trends globally and across the Africa such as market dynamics and strategic developments Advising clients on operational challenges by applying your metals & mining expertise Bachelor's degree in Engineering or Science from a leading undergraduate program preferred Demonstrated expertise in project management and leadership to provide proficiency in prioritizing and balancing multiple project demands Excellent analytical, and strategic thinking abilities to develop transformative solutions Exceptional stakeholder management and communication skills to engage and align cross-functional teams Adept at relationship building and client management across various levels. Excellent verbal and written communication skills Consulting experience, but not pre-requisites Who You'll Work With BCG’s Industrial Goods practice serves four broad industrial segments: Automotive & Mobility, Engineered Products & Infrastructure, Materials & Process Industries, and Transportation & Logistics. We help companies in these sectors think beyond the limits of their traditional business models, choose where and how they should add value, and reorganize to defend themselves against new threats and explore new opportunities. Our Expert Consulting Track The Expert Consulting Track (ECT) is vital to BCG’s ability to successfully meet our clients’ demand for deep expertise and advanced technical capabilities. Experts deliver next-level impact for BCG's most complex and cutting-edge client challenges. Experts focus on developing BCG's thought leadership, commercial capabilities, and intellectual property assets; and their work is essential to our delivery model. Working as part of a multidisciplinary team to bring the ‘best of BCG’ to our clients, Experts come from diverse backgrounds, with expertise often gained outside of BCG in industry, academia, or specialized consulting. EEO and Employment Details Boston Consulting Group is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, age, religion, sex, sexual orientation, gender identity / expression, national origin, disability, protected veteran status, or any other characteristic protected under national, provincial, or local law, where applicable, and those with criminal histories will be considered in a manner consistent with applicable state and local laws. BCG is an E - Verify Employer. Click here for more information on E-Verify. Seniority level Mid-Senior level Employment type Full-time Job function Management and Manufacturing Industries Business Consulting and Services Referral information: Referrals increase your chances of interviewing at Boston Consulting Group (BCG) by 2x. #J-18808-Ljbffr
This advertiser has chosen not to accept applicants from your region.
 

Nearby Locations

Other Jobs Near Me

Industry

  1. request_quote Accounting
  2. work Administrative
  3. eco Agriculture Forestry
  4. smart_toy AI & Emerging Technologies
  5. school Apprenticeships & Trainee
  6. apartment Architecture
  7. palette Arts & Entertainment
  8. directions_car Automotive
  9. flight_takeoff Aviation
  10. account_balance Banking & Finance
  11. local_florist Beauty & Wellness
  12. restaurant Catering
  13. volunteer_activism Charity & Voluntary
  14. science Chemical Engineering
  15. child_friendly Childcare
  16. foundation Civil Engineering
  17. clean_hands Cleaning & Sanitation
  18. diversity_3 Community & Social Care
  19. construction Construction
  20. brush Creative & Digital
  21. currency_bitcoin Crypto & Blockchain
  22. support_agent Customer Service & Helpdesk
  23. medical_services Dental
  24. medical_services Driving & Transport
  25. medical_services E Commerce & Social Media
  26. school Education & Teaching
  27. electrical_services Electrical Engineering
  28. bolt Energy
  29. local_mall Fmcg
  30. gavel Government & Non Profit
  31. emoji_events Graduate
  32. health_and_safety Healthcare
  33. beach_access Hospitality & Tourism
  34. groups Human Resources
  35. precision_manufacturing Industrial Engineering
  36. security Information Security
  37. handyman Installation & Maintenance
  38. policy Insurance
  39. code IT & Software
  40. gavel Legal
  41. sports_soccer Leisure & Sports
  42. inventory_2 Logistics & Warehousing
  43. supervisor_account Management
  44. supervisor_account Management Consultancy
  45. supervisor_account Manufacturing & Production
  46. campaign Marketing
  47. build Mechanical Engineering
  48. perm_media Media & PR
  49. local_hospital Medical
  50. local_hospital Military & Public Safety
  51. local_hospital Mining
  52. medical_services Nursing
  53. local_gas_station Oil & Gas
  54. biotech Pharmaceutical
  55. checklist_rtl Project Management
  56. shopping_bag Purchasing
  57. home_work Real Estate
  58. person_search Recruitment Consultancy
  59. store Retail
  60. point_of_sale Sales
  61. science Scientific Research & Development
  62. wifi Telecoms
  63. psychology Therapy
  64. pets Veterinary
View All Mining Sector Jobs