Registration only

No federal operating authority on file — likely a private or intrastate fleet. That can be perfectly legitimate.

Federal record

Mammoth Granite Inc

USDOT 2166579

Entity type

Carrier

Location

Escanaba, MI

Phone

(906) 233-9440

Email on file

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Power units

Drivers

First on record

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Last MCS-150 filing

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TenFourHQ keeps a page for every USDOT registration so brokers and shippers can verify status — inactive companies get this records view, not a website. The full site unlocks if authority is reinstated.