Limited specialty: drilling, blasting and oil field works in San Francisco, CA

3 licenses with the C-61/D-9 classification list San Francisco (San Francisco County) as their address with the state, 3 of them active. Active licenses with nothing flagged come first.

• ✓Malcolm Drilling Company IncA · C-57 · C-61/D-9 · #259543 San Francisco · San Francisco County Active
• ✓Malcolm/silverado A Joint VentureA · ASB · B · C-21 +3 · #1004080 San Francisco · San Francisco County Active
• ✓Mdc DrillingB · C-61/D-9 · #627271 San Francisco · San Francisco County Active

Source: CSLB license file, Nov 8, 2026All trades in San Francisco