DBA: Wooden Nickel Trucking
Mammoth Music Inc is an active interstate carrier based in Riverton, WY.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 23 | 0 | 0 |
| Tractors | 0 | 23 | 0 |
| Total Power Units | 23 | ||
Distinct vehicles · 24 mo
vs 23 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category | Insp w/ Viol |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 0% | 0% | Better than most peers |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 41% | 84% | Around peer average |
Lower percentile = lower SMS measure = stronger safety record. Computed nightly across active carriers in the same state and fleet-size band.
| Type | Inspections | OOS | OOS % | Nat'l Avg |
|---|---|---|---|---|
| Driver | 0 | 0 | — | 6.67% |
| Vehicle | 0 | 0 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jul 1, 2024 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 4 | 0 | 0 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 23, 2026 | CO | TRUCK TRACTOR | 0 | 0 |
| Mar 1, 2026 | NM | TRUCK TRACTOR | 0 | 0 |
| Jan 31, 2026 | CO | TRUCK TRACTOR | 0 | 0 |
| Jan 6, 2026 | NM | TRUCK TRACTOR | 0 | 0 |
| Dec 29, 2025 | NM | TRUCK TRACTOR |
Wrangler Well Service Inc
No alertsRiverton, WY · 23 units
High Plains Power Inc
No alertsRiverton, WY · 23 units
Wind River Oilfield Service Inc
No alertsRiverton, WY · 23 units
Fremont County Association Of Governments
No alertsRiverton, WY · 22 units
M & M Well Service Llc
No alertsRiverton, WY · 25 units
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 0 | 0.00 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 3 | 0.48 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 3 states. Top state CO accounts for 53% of activity. Activity outside home state (WY): 100%.
| 0 |
| 0 |
| Dec 17, 2025 | NM | TRUCK TRACTOR | 0 | 0 |
| Nov 19, 2025 | NM | TRUCK TRACTOR | 0 | 0 |
| Nov 11, 2025 | NM | TRUCK TRACTOR | 0 | 0 |
| Oct 6, 2025 | NM | TRUCK TRACTOR | 0 | 0 |
| Jul 22, 2025 | UT | TRUCK TRACTOR | 1 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Jul 22, 2025 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |
| Jan 31, 2025 | 39617CPI | Operating a CMV without documentation of a periodic inspection | Vehicle Maintenance | — |
| Jun 12, 2024 | 39360C | Windshield - Damaged or Discolored | Vehicle Maintenance | — |
| Jun 12, 2024 | 39378AWS | Washers - Inoperative washing system. | Vehicle Maintenance | — |