I've searched high and low and have not been able to determine with certainty was this place was originally. I suspect it was an incinerator, based on the large hoppers and dual stacks (as compared to a known incinerator). But this is a guess. Currently and, as it seems to have been the case for the past several years, it was used a rubber scrap facility. Its original purpose had been forgotten long before any clues could have wound up on the internet. Even the EPA merely lists it generically as "Former Industrial Site".