 | Southern Steel Group | milperra, new south wales, australia | 196 | construction | 1947 | |
 | HITT Contracting Inc. | falls church, virginia, united states | 2.1K | construction | 1937 | |
 | InfraSource, A Quanta Services Company | columbus, ohio, united states | 634 | construction | 1954 | |
 | Service Electric Company | chattanooga, tennessee, united states | 384 | construction | 1945 | |
 | Forbes Bros. Group of Companies | edmonton, alberta, canada | 362 | construction | 1976 | |
 | Pike Corporation | mount airy, north carolina, united states | 2.2K | construction | 1945 | |
 | Riley Construction Company, Inc. | Kenosha, wisconsin, united states | 140 | construction | 1965 | |
 | CMC | irving, texas, united states | 8.4K | construction | - | |
 | The Ross Group, Inc. - Portage, IN | Portage, indiana, united states | 11 | construction | 1994 | |
 | Sunshine Supply Company Inc | San Diego, california, united states | 32 | construction | 1971 | |
 | Coutts Brothers Inc | Randolph, maine, united states | 14 | construction | 1963 | |
 | C.W. Wright Construction Company, LLC. | Chester, pennsylvania, united states | 120 | construction | 1953 | |
 | Air Control Products, Inc. | Broadview Heights, ohio, united states | 74 | construction | 1975 | |
 | e-j electric installation co. | long island city, new york, united states | 405 | construction | 1899 | |
 | The Gorman Group | Albany, new york, united states | 42 | construction | 1917 | |
 | Benton-Georgia, LLC | Douglasville, georgia, united states | 180 | construction | 1914 | |
 | City Holdings Limited | yangon, yangon region, myanmar | 137 | construction | 2019 | |
 | bimstore | Newcastle upon Tyne, england, united kingdom | 47 | construction | 2011 | |
 | Terry R. Lee Contracting Co., Inc. | Hardeeville, south carolina, united states | 14 | construction | 1996 | |
 | Allied Building Corporation - a Scarcia Company | Bethlehem, pennsylvania, united states | 13 | construction | 1998 | |
