The provided table illustrates the number of mines used for cool production in the UK from 1913 to 2015.
Overall, the data obviously shows that the number of cool mine significantly decreased during the years. There are 3024 mines in 1913 before dropping to only 5 places in 2015.
At the early year, more than 1000 deep mines were counted between 1913 to 1943. According to the table, the number of cool mines reaches its highest at 3024 places in 1913, before slightly dropping to 2607 spots in 1923, and finally decreasing for almost 1000 places to 1690 places in 1943.
In 1963, the number of UK’s deep mines was dropped to less than 1000 places, which exact number of 943 mines found. Notably, more than 700 deep mines disappeared during the period of 1963 and 1983, resulting in only 170 spots found in 1983. Finally the number of recorded deep mines in the UK dropped to 20 places in 2003 and 5 places in 2015.