The quarrying technique consists of drilling and blasting to fragment the rock. A large number of charges are fired at one time, producing up to 20,000 tons of broken stone in one blast. The broken stone is crushed into smaller pieces that are separated into uniform classes by screening.

What is the process of quarrying?

Quarrying is the process of removing rock, sand, gravel or other minerals from the ground in order to use them to produce materials for construction or other uses. ... Within the UK, the largest quantity of mineral extracted by quarrying is used for construction and known as "aggregates".

What work is done in a quarry?

Quarry workers use powerful machinery to dig and drill rock, sand, slate, gravel, and minerals from quarries and mines. They crush, transport, and process these aggregates for use, often on construction sites.