GRINER DRILLING SERVICE INC
Quick checks from the federal record
Authority active
FMCSA currently lists this operating authority as active.
Tenure: 52 years
Registration history dates back to 1974 — an established federal record.
FMCSA record timeline
MC Look Up archives every monthly census filing and diffs them field-by-field — 1 change tracked for USDOT 191671 so far.
87
to
91
Registration & fleet profile
From 1 archived monthly FMCSA census snapshot for this carrier.
- MCS-150 filing: Jan 10, 2025 — within the biennial update window
- Reported annual mileage: 1,500,000 miles (2024) — ≈16,484 per truck
- Company officers: CHARLES H. GRINER, SR. · CHARLES H GRINER, JR.
- Operation class: Private property only
No analyst narrative exists yet for GRINER DRILLING SERVICE INC. Running a full vetting search generates one — a plain-English readout of the flags, history, and network signals on this page.
What the full workup adds
BASIC percentile detail
Each of the seven BASIC measures with percentile, threshold status, and inspection counts behind it.
Crash-by-crash record
Every reportable crash with date, state, severity, and tow-away status — fleet-normalized.
Live insurance verification
Current BI&PD and cargo coverage against federal minimums, with effective dates and lapse detection.
Full identity graph
Complete shared-phone/address/officer map with revocation overlays, not just the sample above.
Common questions about GRINER DRILLING SERVICE INC
What has changed on GRINER DRILLING SERVICE INC's FMCSA record?
MC Look Up's month-over-month census tracking has logged 1 change to this carrier's federal record — most recently its power units in Jun 2025. Frequent identity-field changes (name, phone, address) can signal a chameleon re-registration.
When did GRINER DRILLING SERVICE INC last update its MCS-150 filing?
The MCS-150 on file dates from 1.7 years ago. That's within FMCSA's required biennial update window.
Who is the listed company officer for GRINER DRILLING SERVICE INC?
CHARLES H. GRINER, SR. and CHARLES H GRINER, JR. appear as company officers on the FMCSA registration for USDOT 191671. Officer names are one of the identity fields MC Look Up cross-references against revoked carriers.
How long has USDOT 191671 been registered?
GRINER DRILLING SERVICE INC first appears in FMCSA records in 1974, giving it roughly 52 years of registration history. Carriers under 12 months old statistically carry the highest risk of identity fraud and double-brokering.
What size fleet does GRINER DRILLING SERVICE INC run?
The latest filing reports 91 power units and 42 drivers — a large operation in MC Look Up's fleet segmentation.
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