Which type of mine is generally drilled and blasted, rather than dug out with excavators or loaders?

A. Quarry
B. Sand and Gravel
C. Dredging
D. All of the above



Answer :

Final answer:

Surface mining involves drilling and blasting rocks to extract mineral ores efficiently.


Explanation:

Surface mining is the type of mine that is generally drilled and blasted rather than dug out with excavators or loaders. In surface mining, the topsoil is removed first to expose valuable mineral layers, which are then blasted into smaller rocks using explosives.

Examples of surface mining methods include open-pit mining, quarrying, and strip mining. Coal and copper are commonly extracted using surface mining techniques.

Blasting, breaking up rocks using explosives, is a crucial step in surface mining to extract mineral ores effectively.


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