Loanhead was a tiny village by about 1599, when it was included on a map of the
Lothians. It was granted a charter allowing a weekly market and annual fair in 1669. Coal was mined profitably in the area for
Sir John Clerk of Penicuik by 1685. The Springfield
paper mill, in the valley of the
River North Esk to the south of the town, commenced in 1742, while
Polton mill followed in 1750. By 1754 Loanhead was a medium-sized settlement. The
limestone industry was a source of employment by the late eighteenth century, the works being at
Burdiehouse, about a mile to the northwest. The coal industry continued to expand and by 1874 the town was linked to the railway. Shale was mined between Loanhead and Burdiehouse in the late nineteenth century, from 1880 under the Clippens Oil Company of
Paisley. By this time the population had expanded to 3,250. The town was granted
burgh status in 1884. The
North British Railway built a steel lattice girder box viaduct across
Bilston Glen in 1892, replacing another which had been designed by
Thomas Bouch. The shale mines closed in 1909 because of incoming water from the Edinburgh waterworks
aqueducts. Burdiehouse limeworks ceased in 1912, although limestone was mined in the area until 1960. The Polton paper mill closed in 1955. Coal mining continued, with the large Bilston Glen pit being sunk between 1952 and 1961. It was closed in 1989, and the site cleared. Bilston Glen Colliery at one stage produced 1,000,000 tons of coal per annum, and employed 2,300 men. The coal workings stretched from
Rosewell to Dalkeith. All coal working ceased following the violent
strikes of 1984–1985, when
Margaret Thatcher was
Prime Minister. The site is now used as an industrial estate. ==Governance==