Extraction of gas; Extraction of natural gas; Extraction of oil; Extraction of oil and gas; Mining extraction; Mining extraction services; Mining for diamonds; Mining for precious metals; Mining for precious stones; Mining for rare earth; Consulting services in the field of mining extraction; Consulting services in the field of repair and maintenance of mining equipment; Diamond mining; Installation of dust extraction apparatus; Installation, maintenance and repair of drilling and mining apparatus; Installation, maintenance and repair of drilling and mining tools; Maintenance and cleaning of mining equipment; Maintenance and repair of mining equipment; Maintenance and repair of mining machines; Natural gas extraction services; Oil extraction services; Oil pumping and extraction; Providing information relating to the repair or maintenance of mining machines and apparatus; Providing technical information in the field of mining extraction; Provision of information relating to the repair or maintenance of mining machines and apparatus; Repair and maintenance of mining equipment; Repair and maintenance of mining machines; Repair of mining machinery; Repair or maintenance of mining machines and apparatus