Carrier profile · USDOT 3433333 · MC-565733 · Updated Jun 13, 2026
SAPPHIRE MATERIALS INC
DBA THOMPSON BUILDING MATERIALS
12 power unitsavg 9.6 yrLocal · 1 statesRIPON, CA82/100
CARRIER INACTIVEMC-565733 INACTIVE
Network & Fraud
Reincarnation chains, shared-VIN links, common domains and officers, and owner-group affiliations — the chameleon / double-broker signals that name-and-USDOT lookups miss.
Shares a registration email domain with other carriers
@thompsoncorp.com — 9 carriers: USDOT 607720USDOT 1195889USDOT 2062524USDOT 2712530USDOT 2753183USDOT 2922778USDOT 3428833USDOT 3766618
Shares a company officer with other carriers
carol vera — 11 carriers: USDOT 57207USDOT 607720USDOT 1195889USDOT 2660290USDOT 2712530USDOT 2744123USDOT 2753153USDOT 2753183
Capacity consistency· registered vs roadside-observed power units
Registered (MCS-150)1212
Observed (24 mo)99
Registered and roadside-observed capacity are broadly consistent.
Owner / group view· confidence: email domain + officer
Owner / group view
Affiliated authorities
Collapses 14 related authorities · joined by email domain + officer
- Authorities
- 14
- Combined power
- 211
- States
- 2
- Oldest authority
- Jun 1, 1974
- Active now
- 10
- SAPPHIRE MATERIALS INC· viewingUSDOT 343333312PU
- AUSTIN CORPORATIONUSDOT 376661847PU
- EDESSA INCUSDOT 275318341PU
- VALORI SAND AND GRAVEL COMPANYUSDOT 5720721PU
- DUENNA INCUSDOT 60772019PU
- PEARL MATERIALS INCUSDOT 342883317PU
- LOMITA BUILDING MATERIALS INCUSDOT 275315312PU
- SILVERADO MATERIALS RIPON INCUSDOT 271253012PU
- BENGAL TRUCKING INCUSDOT 119588910PU
- ASCENDANCY CORPUSDOT 26602909PU
- WALLS UNLIMITED INCUSDOT 27441235PU
- FENNEL INCUSDOT 27532134PU
- CRESCENT MATERIALS INCUSDOT 29227781PU
- OMEGA PRODUCTS INTERNATIONALUSDOT 20625241PU