Let us explode the falsehood once and for all that Mrs Thatcher was responsible for closing all the coal mines. The largest number of closures by far, 93 pits closed under Labour's Harold Wilson during the 1960's. The next highest closure period took place during the Labour Government of Jim Callahan during the 1970's. Mrs Thatcher took office in 1979 and during her period of office only 22 pits closed.
