The worlds two largest contop furnaces had been installed at asarco el paso tx by 1992. The contops were designed to incinerate sludges also. The merco sludge train came thru el paso in their bright red railroad cars, and could have offloaded some of it at asarco (theoretically) because the tracks went by and through plant.
"The New York Times
https://www.nytimes.com › nyregion
Buying an Uneasy Home For New York City Waste
Jul 16, 1995 — Merco urgently needed to jump the line. Federal laws had banned New York from dumping its sludge at sea after July 1, 1992, and..."