Golden Valley Electric Association Healy, AlaskaMargaret S Filios · First published 1998Open the Tome
Oglebay Norton Industrial Sands, Inc., (Central Silica Company), Glass Rock, OhioMargaret Filios · First published 1998Open the Tome
Unimin Specialty Minerals, Inc.-Elco, Elco, IllinoisMargaret Filios · First published 1997Open the Tome
Unimin Specialty Minerals, Inc.-Tamms, Tamms, IllinoisMargaret Filios · First published 1997Open the Tome
