Six feet at a time, Vale has announced, crews will meticulously tear down the 450-foot-tall Copperstack chimney from the skies near Sudbury, Ont., the first phase of a process that will see its more famous sister Superstack also demolished by the end of the decade. Plans for demolition of the Copperstack were announced Sept. 4 … Continue reading Demolition of two Sudbury stacks a towering task