| Business | Phone |
| Central Fishing Tool Inc 1855 E 29th St, Signal Hill 90755 | (562) 424-0934 |
| Graner Oil Co 3377 California Ave, Signal Hill 90755 | (562) 424-8768 |
| Oil Well Svc Co 1241 E Burnett St, Signal Hill 90755 | (562) 595-4501 |
| Petroleum Solids Control Inc 2457 1/2 Lewis Ave, Signal Hill 90755 | (562) 424-0254 |
| Ausburn Oilwell Cementing Co 2941 Gardena Ave, Signal Hill 90755 | (562) 427-7964 |
| Buck's Testing Svc 2698 Saint Louis Ave, Signal Hill 90755 | (562) 426-1942 |
| M-W Bit Svc Inc 3342 Olive Ave, Signal Hill 90755 | (562) 427-5690 |
| Sinclair Mud Svc 1444 E Hill St, Signal Hill 90755 | (562) 989-3480 |