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  Davis Single Shot.JPG - DAVIS SINGLE-SHOT BLASTING UNIT - Brass Davis Single-Shot Blasting Unit marked on front label: Bureauof Mines Approval No. 1207 Issued to the Davis Instrument Mfg Co., Approved for Safety, Reliability and Durability; Caution ‘not permissible unless used with rubber covered leading wires of lengths not exceeding 600 feet of No. 14, 350 feet of No. 16 or 200 feet of No. 18 wire,’ unit measures 4 ¼” x 1 15/16" x 1 3/8"; brass label on other side marked Mine Safety Appliances Co. Pittsburgh U.S.A., with metal and wood twist slot handle, marked PAT at top edge and 602 on bottom, working condition  
Davis Instruments Model 00 Single Shot Blaster Permissible Tag Side
Davis Instruments Model 00 Single Shot Blaster Dupont Tag Side
Davis Instruments Model 00 Single Shot Blaster Top
Davis Instruments Model 00 Single Shot Blaster Bottom
Du Pont Explosives 1922 Williams Hardware Co. Catalogue

Davis Single Shot | DAVIS SINGLE-SHOT BLASTING UNIT - Brass Davis Single-Shot Blasting Unit marked on front label: Bureau of Mines Approval No. 1207 Issued to the Davis Instrument Mfg Co., Approved for Safety, Reliability and Durability; Caution ‘not permissible unless used with rubber covered leading wires of lengths not exceeding 600 feet of No. 14, 350 feet of No. 16 or 200 feet of No. 18 wire,’ unit measures 4 ¼” x 1 15/16" x 1 3/8"; brass label on other side marked Mine Safety Appliances Co. Pittsburgh U.S.A., with metal and wood twist slot handle, marked PAT at top edge and 602 on bottom, working condition Download Original Image
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