Limestone, sandstone, siltstone and schist change into...

Types of aerial methods, and advantages...

Types of on-site methods, and advantages...

Satellite images and geological maps...

Gravitational surveys...

Electromagnetic surveys...

Magnetic surveys...

Seismic surveys...

Geochemical surveys...

Mining types... depends on...

Dredge mining...

Leach mining...

Surface mining...

Underground mining...

Drilling is used to mine...

Petroleum wells what is there...

Process at petroleum wells...

If the natural pressure of the oil and gas drops...

Ocean rigs...