1 | BWCM | BLUE WHALE CORPORATION | | | SCAC4 |
2 | BWCMCo | BERWIND-WHITE COAL MINING CO. | | | PWRC |
3 | BWCMCo. | Berwind-White Coal Mining Co. —temporarily assigned expiring Jan. 1, 1939 | 7/1937-4/1938 | | NAKINA |
4 | BWCMCo. | Berwind-White Coal Mining Co. | 7/1935 | | NAKINA |
5 | BWCMCo. | Berwind-White Coal Mining Co. | Apr-38 | | NRHS |