Longcliffe Quarry Sand Washing Plant Now In Use Last summer we were working on the civil design of a new washing plant for Longcliffe Quarries Ltd., in Derbyshire. The project is now commissioned and in use. This is the first time we have worked with the civil contractor, RMB Contractors Ltd. of Derbyshire. Their site team was very impressive and produced concrete work of a very high standard, even though the last couple of months of 2019 were unusually wet. The mechanical de