Explosion at Hapton Valley Colliery, Lancashire
Stephenson, H. S.
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MINISTRY OF POWER EXPLOSION AT HAPTON VALLEY COLLIERY, LANCASHIRE REPORT On the causes of, and circumstances attending, the Explosion which occurred at Hapton Valley Colliery, Lancashire, on 22nd March, 1962 By H. S. STEPHENSON, B.Sc., M.I.Min.E. H.M. Chief Inspector of Mines, and Quarries