Quarry
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A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to manage their safety risks and reduce their environmental impact.
A quarry at Carrara in Tuscany, Italy
A Portland stone quarry on the Isle of Portland, England
An abandoned construction aggregate quarry near Adelaide, South Australia
An abandoned stone quarry in Kerala, India
Open-pit mining
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Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, is a surface mining technique that extracts rock or minerals from the earth using a pit, sometimes known as a borrow pit.
Rock blasting at the large open-pit Twin Creeks gold mine in Nevada, United States. Note the size of the excavators for scale (foreground, left), and that the bottom of the mine is not visible.
The giant bucket-wheel excavators in the German Rhineland coal mines are among the world's biggest land vehicles.
Kittilä Gold Mine in Kittilä, Finland is the largest primary gold producer in Europe.
Note the angled and stepped sides of the Sunrise Dam Gold Mine, Australia.