Scotland has had a long association with the asbestos industry. Scottish entrepreneurs were among the pioneers in developing the manufacture of asbestos products, with the first companies appearing in the 1870s. One account suggests that it was two Scottish businessmen who first introduced the mineral to the United Kingdom, establishing the Patent Asbestos Manufacturing Company in Glasgow to process asbestos, imported initially from Canada in 1871. Thereafter growth was rapid as the potential of the manufactured mineral began to be realized. By 1885 there were at least 19 asbestos manufacturers and distributors in Glasgow and a further handful dotted around Lanarkshire. The number of companies increased, and at the turn of the century 52 were listed as "asbestos manufacturers" in the Glasgow Post Office Directory.