Brownfield case study - Dunbar

Lafarge Cement’s Dunbar Works in Scotland manufactures over a million tonnes of cement each year for construction projects across Scotland and the north of England - and to make this cement, it strips over three million tonnes of limestone from its quarry each year.

Although progressive restoration follows this strip mining, the natural topsoils are sandy, stony and nutrient poor – rendering restoration to a good agricultural standard difficult. The purpose of the trailblazer trials was to examine the potential for quality compost to improve poor quality replaced topsoils to standards sufficient for woodland, rough grazing and pasture. Results demonstrated that the compost helped the soil in a number of ways, including boosting its organic matter and plant nutrient content.

Compost being applied to site

 

Plant establishment following compost application