Lagoons
Grassmoor lagoons were formed in spoil tips at the former Grassmoor Colliery, which operated on the site from the 1840s until its closure in 1967. When British Coal opened the Avenue Coking Works nearby, it used the lagoon area to treat waste liquid from the coking works. During this time, large amounts of coal tar sludge from the works settled in the lagoons. The Avenue Coking Works closed in 1993, and Derbyshire County Council took over the lagoons site later the same year. Derbyshire County Council owns the Grassmoor Lagoons site and has secured funding to remediate the lagoons area. Once this is achieved, the council intends to incorporate the area back into the Grassmoor Country Park.
Read more about this topic: Grassmoor