Pit Brow Lasses; Later that year (1842), the Mines and Collieries Act was passed. It stated that it was illegal to employ a female of any age, or a boy under the age of ten, underground at a mine. Soon, new communities of female workers began to spring up around the pit head. They were known as ‘Pit Brow Lasses’ in Lancashire and areas of the north, ‘Tip Girls’ in South Wales, and ‘Pit Bank Women’ in Staffordshire.