At Clifton Country Park are the industrial remains of Wet Earth Colliery. Established around 1740, the colliery was one of the first deep mines to be sunk in the Irwell Valley. Wet Earth Colliery is of importance for three main reasons. It was the first deep mine to be sunk in the valley, and had the first application of steam winding in the area. Secondly, compared to most other pits, it had a very long working life: from around 1750 through to 1928 - almost 180 years. Finally, it's association with James Brindley and his ingenious hydraulic pumping scheme for the colliery, which was in continuous use from 1756 to 1924, just before the colliery closed. This volume is the complete guide to the history and exploration of part of the mining complex.