Coltness Iron Co. Ltd, incorporated 1881 to take forward the interests of the Coltness Iron Co. Reconstituted in 1899
Pits in West Lothian operated by the company.
The founding directors in 1881 were:
- James Holdsworth of Coltness
- William Henry Holdsworth of Coodham, Kilmarnock
- William Holdsworth of Mount Charles, Ayr
- James Hunter of Glenapp
- Walter James Houldsworth, Coltness House, Wishaw
Listed in the 1924 Colliery Year Book with directors:
- J. Hamilton Houldsworth, Castle Bank, Lanark
- H. Erskine Gordon, Aitkenhead, Cathcart
- Thos. Russell, Dunolly, Newmains
- P. Rintoul, 105 St. Vincent St. Glasgow
- R.M.Wilson, Tillicountry House
- Wm Hamilton Telfer, Whitestripe House, Newmains
Pits in West Lothian
- Woodend, Armadale, employing 227 underground and 64 surface workers, manager Wm. McGarrity