Open questions: Merseyside

Where sources disagree, MineArchive keeps both accounts rather than picking one; where a fact could not be settled, the record says so. 8 such claims on 5 records. All regions.

Alexandra Colliery

• The Princess of Wales visited the colliery during the sinking. (disputed)
• The colliery was named after the Princess of Wales because she visited the Ravenhead glassworks nearby in 1865. (disputed)
• The cage fell four hundred yards to the bottom of the shaft. (disputed)

New Boston Colliery

• Sunk about 1854 and lasting until 1910 (Wikipedia and Engole); the museum dates it 1880–1910 with two people pumping in 1910; the NMRS gives closure in 1907. (disputed)

Rainford Colliery

• Final closure about 1929. (disputed)
• The shaft was sunk in 1860 through sixteen feet of wet gravel and sand; the colliery declined after the 1926 strike and closed in 1928. (disputed)

Sherdley Colliery

• Sutton Beauty and Heritage gives the colliery as mining coal from the 1870s until 1944, after which it was retained for pumping, lying near Alexandra and up dip of the company's Lea Green and Bold collieries. The Northern Mine Research Society's own dating of the pit is 1873 to 1943. (disputed)

Whiston Colliery

• Whiston Colliery closed in 1897. (disputed)