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Single nozzle 616-tube burner with nozzle and supply tubes removed from casing
Building under construction
Building 76-B, 60″ stage
Building 76-B, 60″ stage
Frederick Lindvall and others is the advanced course in engineering
Continuous furnace for breaking up quartz to be pulverized
Building--front elevation
Triple burner, tubular oxy-hydrogen type, water-cooled
Frederick Lindvall and others is the advanced course in engineering
Building--rear elevation
Continuous livigating device or elutriator
Grinding 22″ quartz mirror blank
Fused quartz mirror blank no. 7
Fused quartz mirror blank no. 7
Building 76-B, 60″ stage
Building 76-B, 60″ stage
Building 76-B river works, 60″ stage
Final dryer before bottling prepared quartz
Single nozzle 616-tube burner with casing for support and supply tubes
Electric quartz-annealing furnace, without cover--close-up view