ROCK WOOL MANUFACTURING CO
Operations
What ROCK WOOL MANUFACTURING CO’s FMCSA record shows
Each field from the public registration, and what it means when you’re vetting this carrier.
- USDOT number 41951
- The USDOT number is FMCSA's permanent ID for this company. It never changes, even when the business renames, moves, or changes owners, so it's the most reliable way to identify ROCK WOOL MANUFACTURING CO.
- MC number None on file
- No MC number is on file. That's normal for private fleets hauling their own goods and for intrastate-only carriers, but a company with no MC number can't legally haul regulated interstate freight for hire.
- Operating status Active
- FMCSA lists this USDOT number as active. Active status alone doesn't confirm current insurance or operating authority; those are separate checks.
- Operation type Intrastate
- Intrastate carriers are registered to operate within a single state. Booking one for a load that crosses state lines is a compliance red flag.
- Fleet size 1 power unit, 1 driver
- ROCK WOOL MANUFACTURING CO self-reports 1 power unit (trucks and tractors), which makes it an owner-operator. Fleet counts come from the carrier's own MCS-150 filing and aren't independently audited.
- Last MCS-150 update Jan 8, 2001
- The MCS-150 is the registration form where carriers report their address, fleet size, and operations. ROCK WOOL MANUFACTURING CO last filed it on Jan 8, 2001. That's more than ten years old, so the company details here are essentially unverified.
Safety profile
FMCSA BASIC percentiles, inspection history, and out-of-service rates.
Full safety report
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Crash history
State-reportable crashes, severity breakdown, and time-decayed analysis.
Crash history
Individual crash records with date, severity (fatal / injury / tow-away), and fleet-normalized rate.
Insurance & compliance
Active policy coverage, insurance carrier, effective dates, and historical gaps.
Insurance details
BI&PD coverage, cargo insurance, insurance carrier name, effective dates — a critical pre-booking check.
Authority & cross-reference
Authority revocation history and chameleon carrier detection across 4.4M records.
Authority & cross-reference
Every authority grant, revocation, and reinstatement — plus chameleon flags from address / officer / phone matches.
Frequently asked questions about ROCK WOOL MANUFACTURING CO
Common questions about this carrier, answered from FMCSA public records.
Is ROCK WOOL MANUFACTURING CO a legitimate motor carrier?
ROCK WOOL MANUFACTURING CO is registered with FMCSA under USDOT number 41951. Operating authority status is currently Active.
Where is ROCK WOOL MANUFACTURING CO based?
ROCK WOOL MANUFACTURING CO lists its physical address in LEEDS, AL in FMCSA records. The physical state and city fields are provided by the carrier on their MCS-150 form.
Is USDOT 41951 active?
USDOT 41951 (ROCK WOOL MANUFACTURING CO) operating authority status is currently Active. Last verified by Carrier90 on April 17, 2026. Data is sourced from live FMCSA federal records.
How many trucks does ROCK WOOL MANUFACTURING CO operate?
ROCK WOOL MANUFACTURING CO reports 1 power unit and employs 1 driver to FMCSA. These figures come from the carrier's most recent MCS-150 filing.
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