how was coal developed

By elliebennett02

  • 1890

    people in they office were enspired by coal miners

  • 1907

    a new smockless field of coal

  • 1912

    mary harris leads a march of miners

  • 1924

    There were 65,000 pit ponies employed underground.

  • 1930

    The safety helmet was introduced to coal mining.

  • 1942

    Opencast mining was increased to assist war effort. 

  • 1944

    By this date 72% of the annual were output of coal.

  • 1950

    The national output of coal was estimated at 204,000,000 tones.

  • 1958

    In this period 34 coal pits were closed down.

  • 1992

    The number of pits had been reduced until just 50 pits were open