With reserves of both natural alluvial sand and gravel and granite, Front Range Aggregates produces both natural gravel and crushed products ideally suited for ready-mixed concrete production, asphalt concrete production, landscaping or other construction products.



ASTM #57/#67:
A washed gravel product with a top size of ¾”  used in the production of concrete.







ASTM # 6:
A fully crushed rock product with a top size of ¾”  used in the production of asphalt.







ASTM #7:
A fully crushed rock product with a top size of ½” used in the production of asphalt.







ASTM #4:
A washed gravel product with a top size of 1 ½” used in the production of concrete.







Boulders:
A round river boulder ranging is sizes from 1’-2’ to 2’-3’.







ASTM C-33 Sand:
Washed sand used in the production of concrete.








ASTM #8: A washed gravel product with a top size of 3/8" used in the production of concrete.








Crusher Fines: 3/8" minus 100% crushed, low 200's (8% passing)


Cobblestones: 
A round river rock ranging is sizes from ¾”-1 ½”, 2”-4”, 4”-8”, 5”-12”.