Carrier profile · USDOT 45597 · MC-76472 · Updated Jun 13, 2026
DIAMOND MATERIALS LLC
136 power unitsavg 7.8 yrRegional · 4 statesWILMINGTON, DE94/100
CARRIER ACTIVEMC-76472 ACTIVERATED CONDITIONALHAZMAT
Identity & Federal
The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.
Location
- Physical address
- 924 S HEALD ST, WILMINGTON, DE, 19801
- Mailing address
- 242 N JAMES ST SUITE 102, NEWPORT, DE, 19804
- Operation
- Interstate· Hazmat
Contact
- Phone
- (302) 658-6524
- Fax
- (302) 658-0684
- Web domain
- diamondmaterials.com
Registration
- Officers
- Richard E. Pierson, Jr · Toni Wood
- USDOT / docket
- 45597 · MC-76472
- First registered
- Jun 1, 1974
- Last MCS-150
- Jul 2, 2025 · 676,737 mi (2025)
- FMCSA safety rating
- Conditional · May 26, 1988
- D-U-N-S
- 884222167
Fleet (self-reported · MCS-150)
MCS-150 filing history· biennial-update cadence
Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.