| Business | Phone |
| Green Forest Enterprises Inc 7155 N Green Tree Ct, Milwaukee 53217 | (414) 352-2862 |
| Apl Environmental Laboratory 8222 W Calumet Rd, Milwaukee 53223 | (414) 355-5800 |
| Aspen Consulting Inc 3031 N 114th St, Milwaukee 53222 | (414) 476-5802 |
| B 83 Testing & Engineering Inc 3040 W Hopkins St, Milwaukee 53216 | (414) 449-9396 |
| Apl Inc 8222 W Calumet Rd, Milwaukee 53223 | (414) 355-3909 |
| Geotest Inc 2135 S 116th St, Milwaukee 53227 | (414) 321-8378 |
| Micro Analytical Inc 11521 W North Ave, Milwaukee 53226 | (414) 771-0855 |
| Sts Consultants Ltd 11425 W Lake Park Dr, Milwaukee 53224 | (414) 359-3030 |
| Ndt Specialists 6660 W Washington St, Milwaukee 53214 | (414) 771-8366 |
| Tailgate Llc 612 E Glover Ave, Milwaukee 53212 | (414) 263-5347 |
| S-F Analytical Labs 6125 W National Ave, Milwaukee 53214 | (414) 475-6700 |