Diamond Drilling & Supply Company
855 Godfrey Ave SW, Grand Rapids, MI 49503
(616) 245-3100
Materials Testing Consultants - Doug Sabin Pe
693 Plymouth Ave NE, Grand Rapids, MI 49505
(616) 456-5469
Prein & Newhof
3355 Evergreen Dr NE, Grand Rapids, MI 49525
(616) 364-8491
Professional Safety Solutions
5210 6 Mile Ct NW Ste 3, Comstock Park, MI 49321
(616) 419-3972
Thomas Investigative Service
810 Pendleton Dr NE, Comstock Park, MI 49321
(616) 784-0490
