Additional memo from Mr. Gumbinner 10 Aluminum based offset plate

One day I was called into Mr. Halpern’s office to meet the owner of Alum-lith.   He had been making direct image aluminum plates and now was making presensitized aluminum printing plates.  He told us he had found out how 3M was making theirs and for a royalty he would explain the process to us.  He also wanted a small royalty if we used the light sensitive diazo on our paper products para diazodiphenylame  and  formaldehyde. which was supplied by a company in Chicago . Later Gene Golda worked out the method of condensing the para formaldehyde with the diazo . I  designed a plant to make this which was erected at Cellomer.  I and Fred Hozeny, who was the maintenance superintendent and had a license to operate a boiler went to the Alum-o-lith plant.  It was in a suburb of Los Angeles.  I believe Alhambra. We took notes and duplicated the tanks and racks. To make room.  We leased the basement of a vacant school building on Prospect Street.  We  moved the stencil finishing operations there.  Later they were moved to Saw Mill River road. We built a series of tanks and a squeeze roll coater with infra red bulbs to apply the diazo.  We put the first tank line in the space where the stencil finishing operation had been.