Get Price
  1. Home
  2.  >> Average

average average rock crushing rate 1

The average production life of a crushed stone quarry is 40 to 50 years or more. Sand and gravel deposits are typically worked out in much shorter time. JOBSECONOMY. The aggregates industry in North Carolina employs just over 3,000 people. The average number of employees at an aggregate production site is about 20.