![Gravel Pits, Quarries, and Aggregate Crushing and ...](/e69yszg/475.jpg)
Gravel Pits, Quarries, and Aggregate Crushing and ...
Do I need an air permit for a gravel pit, quarry or aggregate crushing and screening plant? In most cases you will not need to obtain an air permit for small gravel pits that do not conduct any aggregate crushing operations. ... Equipment Specifications and Designs. Type of nonmetallic mineral(s) to be processed: ( sand, gravel, ledge rock ...