sentences:  2 collieries on the Springhill Coal Field.The company suffered a devastating loss on February 21, 1891 when a fire ignited accumulated coal dust in both collieries killed 125 miners (see the 1891 Fire under Springhill mining disaster).Following the fire, coal production resumed on an ever-increasing scale in the Springhill Coal Field, fed by the railway boom across Canada and the economic protection afforded by the National Policy which prevented a flood of cheap American coal into the country.