Carrier profile · USDOT 948584 · MC-406494 · Updated Jun 13, 2026

DIAMOND CORING CO INC

15 power unitsRegional · 3 statesCHICAGO, IL50/100

CARRIER ACTIVEMC-406494 ACTIVE

Authority & Insurance

Active operating authority by type and the full insurance continuity timeline — insurer, policy, coverage, and any lapses — so you can confirm they can legally and adequately haul your load today.

Operating authority· 49 CFR · per type

Operating authority

Common: None
Contract: Active
Broker: None

Insurance & bonds

BIPD / liability$1,000,000 in force

Cargo filing (census)Not recorded per census

Surety bond (census)Not recorded per census

Insurance adequacy· filed BIPD vs the $750K federal floor

$1M in forcegeneral-freight federal minimum

$750K floor

Filed BIPD coverage of $1M meets or exceeds the $750K federal minimum for general freight (49 CFR 387.9). Some commodities (hazmat, larger vehicles) require $1M–$5M — confirm against your load.

Insurance continuity· insurer · policy · lapses

$750K BIPD last filed ’25 · 6 insurers · 1 lapseCoverage lapse

Qbe’02–’08

Starr Liability’11–’15

Westfield’15–’20

Selective America’22–’25

2002200820142020now

Shorter eras are too brief to label at this scale — all 6 insurers are named in the list below.

BIPD in force — $1,000,000 · ARCH INSURANCE COMPANY · since Oct 2025

All 6 insurer eras · dates, limits, renewals

Insurer	Period	Limit	Renewals
SELECTIVE INSURANCE COMPANY OF AMERICA	Apr 2022 → Oct 2025	$750K	2
LIBERTY MUTUAL FIRE INSURANCE CO.	Mar 2020 → May 2022	$750K	2
WESTFIELD INSURANCE CO.	Mar 2015 → Mar 2020	$750K	1
STARR INDEMNITY & LIABILITY INSURANCE COMPANY	Mar 2011 → Mar 2015	$750K	1
AMERICAN STATES INSURANCE CO.	Nov 2008 → Apr 2009	$750K	1
QBE INSURANCE CORPORATION	Mar 2002 → Nov 2008	$750K	1