DENM — Quarry and material-source record

Primary commodity in source: Construction Sand and Gravel; Operator in source: Monarch Mountain Minerals & Aggregates. Recorded location: Weld, CO. Review the recorded source identity, location and material information together. Confirm current eligibility and operating details with the original publisher.

StateCO

Source-backed record from MSHA surface aggregate mine register. Browse the labeled observations and original source below.

Source collection
MSHA surface aggregate mine register
Source checked
2026-10-15

Reported record details

Fields retain their source labels and context. Read the original source for full details, qualifications and current status.

Source data row 10568

MSHA mine-register snapshot. Active means the status reported in this download, not a current operating guarantee or DOT materials approval. Coordinates are reported by the source and may represent portable operations.

MSHA mine ID
0505193
Mine name in source
DENM
Mine type in source
Surface
Status in source
Active
Status effective date in source
04/16/2026
Operator in source
Monarch Mountain Minerals & Aggregates
State
CO
County
Weld
Nearest town in source
Platteville
Primary commodity code
144200
Primary commodity in source
Construction Sand and Gravel
Portable operation flag (Y/N)
Y
Reported latitude
40.304167
Reported longitude
-104.811944

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—Source data row 10568 · MSHA mine-register snapshot. Active means the status reported in this download, not a current operating guarantee or DOT materials approval. Coordinates are reported by the source and may represent portable operations.

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Retrieved 2026-10-15. Original files remain with their publishers; the displayed fields and navigation retain their source context.

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