I worked at the Testing Butts Bld 300 in 1960s for 3-4 months. Mostly on SPIW testing. It was a summer college job. Friend Art Zaveralla , head of Engineering Dept got the job for me. I have a dumpster Diving spent bullet collection from that summer at the Butts! I am a retired. NASA Givie Engr. My dad also worked at Armory as Efficiency Engr. This message will not take photos of the shells! I also have my dads files from Armory. Joseph C Bolt. I also graduated from Spfld Tech HS in 1957 & bowled candle pin , shot rifle targets, etc at Spfld Armory. I also have a stereo photo of the parts dept women working on boxes of parts.