types of quarry rock,Gravel & Crushed Rock - Institute of Quarrying AustraliaGravel and crushed rock are referred to collectively as 'coarse aggregate'. . It is not unusual for a crushed rock quarry to remain in operation for many years and.types of quarry rock,Where Things Come From: Rock Materials - ThoughtCoOct 29, 2018 . Rough "natural rock" is mined from quarries using explosives and heavy . (ashlars) with unfinished surfaces, or veneers of the same type.
types of quarry rock