was also quarried between 1900 and 1931. An iron mine called the Church Mine was begun 1910 The entrance was from one of the Islip quarries. Another mine was begun in 1923 with an entrance near Lowick called Church Mine North.The tramways in the open air were built to a 3 foot gauge but in the mines there were 2 foot 6 inch tramways. Haulage was at first by horses but from 1875 steam locomotives were introduced on the 3 foot gauge. In the mines horses were used throughout although things changed in the 1930s. The quarries, mines and works come under the control of the company that ran the Corby ironworks in 1930. They increased production and in 1933 the Church Mine and Church Mine North were connected underground. Henceforward the southern entrance close to the works was used.for both mines. They introduced diesel locomotives in the mines from 1933 except in the headings where horses were still used. In 1933 production was doubled over 1933. The ironworks continued production until 1942. During that time the works produced iron for casting, whereas the Corby works produced basic iron for steel making (from 1936 at the new Corby Steel Works.) In 1941 there was a proposal to convert the 3 foot gauge tramways to standard gauge and to connect them to the Corby works system to enable transport to those works without transhipment (except at the mine exit) or use of the main line railway route through Kettering. However this never happened. The quarries and mines at Slipton had closed by this time. The mine closed in 1947 and the Twywell quarries in 1948.The quarries at Lowick and Sudborough continued until 1952, still sending their ore by tramway past the village of Islip to the Islip sidings for transhipment to the main line. Calcined ore which had been left near to the ironworks was extracted until 1969. The site of the iron works was occupied by various industrial and commercial concerns after closure. Some of the original buildings remain but others have been demolished. Some traces remain of the quarries but much has been filled in with landfill rubbish or otherwise. Similarly some traces of the tramways remain. The entrances to the mines have been sealed but in one place the surface above the mine collapsed in 1985. References Further reading External links Villages in Northamptonshire North Northamptonshire Civil parishes