Mine Profile
Littlerock Quarry
Hesperia, California
Learn more about the operator, controlling company, and MSHA profile for this site. Mining Sentry keeps this information fresh so that safety leaders can plan visits, benchmark production, and validate compliance.
- MSHA ID
- 0404802
- Operator
- Hi-Grade Materials Co
- Controller
- Robar Enterprises Inc
- Business Name
- Hi-Grade Materials Co
- Status
- Active
- Mine Type
- Surface
- Primary SIC
- Construction Sand and Gravel
- Address
- 17671 Bear Valley Rd.
- City
- Hesperia
- State
- California
- Zip Code
- 92345
- Contact Title
- President
Mine Classification
Type code Surface designates the site as a surface operation. Primary SIC Construction Sand and Gravel can be used to benchmark production and safety trends against similar mines in Mining Sentry.