Estevan, the "power center" and eighth largest city of Saskatchewan offers tours of the Rafferty Dam, Boundary Dam Power Station, Boundary Dam Mine, the Shand Power Station and Shand Greenhouse. The city of Estevan is nicknamed Saskatchewan's Energy Capital, as it is provided with coal, natural gas, and oil resources. Prairie Mines & Royalty Ltd. (PMRL) operates the two large coal mines, The Boundary Dam Mine and Bienfait Mine supplying 6.1 million cubic tons of coal to the Shand Power Station and Boundary Dam Power Station. Estevan Heritage Walking Tour and the Historic Driving Tour through the Souris Valley brochures are both available at the Saskatchewan Visitor Information booth. Woodlawn Regional Park features the Souris Valley Theatre which puts on live plays.