The sort of compressor I remember in the sixties were usually of V twin cylinder design and would supply the whole factory with 100psi of compressed air mostly to clean and clear chippings and swarf from all the machine tool beds and components being made.
They were large. Stand close to one and you could feel the concrete under your feet throbbing. Hence the need to isolate their existence to the nether regions of the factory and not to mention the noise. Hissing, farting and whining, Elf and Safety would have had a field day.
I remember a compressor of this sort being moved to feeder road in Bristol, where it tried to bury it's self. They don't call the area St Philips Marsh for nothing and so the compressor had degassed the boggy ground beneath it and then sank into the slurry it had made. Similar to vibrating concrete to exclude voids.
However I haven't seen any for sale here lately. Possibly try India where they might still be working.