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The Sutton Heath and Lea Green Collieries
c. 1852 The collieries were started at St. Helens; worked by James Bradley
1888 Company formed.
1893 Modern pits were sunk about 1893 to a depth of about 500 yards.
1920 Company registered; annual output of 750,000 tons; one of its largest shareholders was Richard Evans and Co.
1927 See Aberconway Chapter VII for information on the company and its history