Sydney Mines, town (1991 pop. 7,551), Cape Breton Island, N.S., Canada, on Sydney Harbour. It is a former coal-mining center, coal having been mined in the area from 1784 to 2001. There are steel mills, foundries, and machine shops. The town is the terminus of a transatlantic cable.
"Sydney Mines." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (November 12, 2018). https://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/sydney-mines
"Sydney Mines." The Columbia Encyclopedia, 6th ed.. . Retrieved November 12, 2018 from Encyclopedia.com: https://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/sydney-mines