Young, Lewis E.2017-11-172022-02-032017-11-172022-02-03https://hdl.handle.net/11124/171895Mine report no. 591.Typescript (carbon copy).reportsengIn copyright - non-commercial use permitted (http://rightsstatements.org/vocab/InC-NC/1.0/).Mines and mineral resources -- UtahBonanza mine, Utah, Barber Asphalt Corporation: proposed mine improvementText