Back around the time you're talking (late '80's/early '90's) there were plans to build INCINERATORS for hazardous waste in Ohio that were met with great opposition.
One of the concerns was why Ohio would be used for getting rid of other states' hazardous waste. Most likely this is what these 'ovens' you talk about.
" There is no doubt in my mind that this crematorium was meant for us...." By "us" you must mean space aliens? JEEZ!