It was not until 1852 that the Civil Parish of St Helens was instituted (noted in 1874 by Wilson as "more extensive than the town"). The Mill Street Barracks were completed in 1861. On 2 February 1868, Queen Victoria granted a Charter of Incorporation, defining St Helens officially as a Municipal Borough. The first election of Councillors took place on 9 May the same year, followed by the first Town Council meeting on 18 May. About 20 years later in 1887 St Helens became a County Borough, with two Members of Parliament. In 1894, the Parish of St Helens was incorporated under the 1893 St Helens Corporation Act. This was achieved by the abolition of the Civil Parishes of Parr, Sutton and amalgamation of their townships. The Civil Parishes of Eccleston and Windle both ceded portions of their areas over to St Helens. The modern Borough of St Helens includes areas historically not associated with the town. The 1974 creation of the Ceremonial County of Merseyside appended the former urban districts of Haydock, Newton-le-Willows and Rainford, and parts of Billinge-and-Winstanley and Ashton-in-Makerfield urban districts, along with part of Whiston Rural District, all from the administrative county of Lancashire. The urban sprawl of St Helens was already extended up to the boundary lines of places such as Haydock and Rainhill, where inhabitants may consider themselves either part of either both St Helens the 'Town' or 'Borough', or just the Borough. Industrial development Until the mid-18th century, the local industry was almost entirely based on small-scale home-based initiatives such as linen weaving. The landscape was dotted with similarly small-scale excavation and mining operations, primarily for clay and peat, but also notably for coal. It is the coal to which the town owes both its initial growth and development and the subsequent development of the coal-dependent industries of copper smelting and glass. Sitting on the South Lancashire Coalfield, the town was built both physically and metaphorically on coal; the original motto in the borough council's coat of arms was "Ex Terra Lucem" ("From the Ground, Light") and local collieries employed up to 5,000 men as late as the 1970s. During the boom years of the British coal industry (1913 was the peak year of production, with 1 million employed in UK mining industry) the St Helens division of the Lancashire and Cheshire Miners' Federation (the local miners' union) had the largest membership (10%)