LAS VEGAS, NV — 2026-03-31 00:00:00

OSHA Inspection: MAMMOTH UNDERGROUND LLC

Referral inspection · Safety discipline

At a glance

On 2026-03-31 00:00:00, OSHA opened a referral safety inspection of MAMMOTH UNDERGROUND LLC in HELIOLITE PLACE AND AMONG LANE, LAS VEGAS, NV 89143 (NAICS 237110). OSHA activity number 348845355.

What this inspection record means

OSHA opens inspections for many reasons — routine scheduling under a national or local emphasis program, an employee complaint or referral, or a follow-up after a reported injury. Opening or conducting an inspection is not itself an allegation or a finding that this employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.

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Where did this inspection happen?

Establishment: MAMMOTH UNDERGROUND LLC
Site address: HELIOLITE PLACE AND AMONG LANE
City: LAS VEGAS
State: NV
ZIP: 89143
Mailing: 421 WEST BONANZA ROAD, LAS VEGAS, NV 89106

What kind of inspection was it?

Inspection type: Referral (C)
Scope: Partial (B)
Discipline: Safety
Advance notice: No
Union status: B

When did the case open and close?

Opened: 2026-03-31 00:00:00
Closing conference: 2026-05-28 00:00:00
Last modified: 2026-07-21 00:00:00
Data loaded: 2026-07-22 00:20:21

Establishment context

NAICS code: 237110
Employees: 6
Ownership type: A

Citations

No citations on file for this inspection — so there is no finding of any violation on this record. An inspection can be open and still ongoing, or closed with no violations at all; OSHA's citation feed is also backfilled in rolling windows, so citation rows for a very recent inspection may not have been ingested yet.

More inspections at Mammoth Underground LLC

Mar 18, 2025 LAS VEGAS, NV Dec 3, 2024 LAS VEGAS, NV Nov 4, 2024 LAS VEGAS, NV Oct 2, 2023 LAS VEGAS, NV Jun 22, 2018 NORTH LAS VEGAS, NV

View Mammoth Underground LLC's full OSHA safety record →

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Source

This record is reproduced from the U.S. Department of Labor Open Data API (OSHA inspection dataset). The original IMIS detail view is available at OSHA's Establishment Search for activity number 348845355.

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