Swanscombe
Swanscombe is a town in the Borough of Dartford in Kent, England. It lies east of Dartford as well as north-west of Gravesend, in the civil parish of Swanscombe and Greenhithe. At the 2001 UK census, the Swanscombe electoral ward had a population of 6,418. Swanscombe was essential in the early history of cement. The very first cement production functions near Swanscombe were opened at Northfleet by James Parker, around 1792, making "Roman concrete" from cement stone brought from the Isle of Sheppey. James Frost opened an operate at Swanscombe in 1825, utilizing chalk from Galley Hill, having patented a new concrete called British Cement. The Swanscombe plant was subsequently gotten by John Bazley White & Co, which became the largest part of Blue Circle Industries when it created in 1900. It finally closed down in 1990. In between 1840 and also 1930 it was the largest concrete plant in Britain. By 1882 numerous cement producers were running across the north Kent region, yet the resulting dirt air pollution drove the people of Swanscombe to take legal action versus the regional concrete works. Regardless of different technological innovations, the trouble persisted right into the 1950s, with telegraph lines over an inch thick in white dirt. Modern cement kilns in Kent using chimneys 170 m (550 feet) in height are now said to be the cleanest worldwide. Nonetheless, the adjoining Medway towns are reported to be the most contaminated inhabited area in the UK, as well as the cement sector contributes to acid rain in Scandinavia.