Betteshanger was the largest colliery in the Kent Coalfield, employing thousands of miners working a seam some below ground level. The mine had a reputation for militancy as many of the miners who took up jobs there after its opening in 1927 had been blacklisted from mines in other parts of the country for their actions during the 1926 general strike. The miners had held a strike in 1938 over the treatment of young employees at the colliery.