- A. Allan & Sons
- Alexander M. Graham
- Armadale Coal Co. Ltd.
- Badallan Coal Co.
- Badallan & Palace Farm Collieries Co. Ltd.
- Bairds and Scottish Steel Ltd.
- Balbardie Colliery Co. Ltd.
- Barr & Thornton Ltd
- Birniehill Coal Co. Ltd
- Coltness Iron Co.
- Coltness Iron Co. Ltd
- Crofthead Coal Co.
- Drumcross Coal Co. Ltd.
- Drumpellier & Craigrigg Collieries Ltd
- Eastrigg Coal Co.
- Gavin Paul & Sons
- Gavin Paul & Sons (Limited)
- George Moir & Co
- Glasgow Iron & Steel Co. Ltd.
- Gormyre Colliery Co.
- Henry Walker & Cameron
- Henry Walker & Son
- Hilderston Hill Coal Co.
- Hilderston Hill Coal Co. Ltd.
- James Hosie
- James Russel and Son
- James Wood & Co.
- John Nimmo and Son,
- John Nimmo & Son Ltd.
- Lanrigg Coal Company
- Loganlea Coal Co.
- Loganlee Coal Co. Ltd
- Monkland Iron & Coal Co.
- Monkland Iron & Steel Co.
- Murraysgate Coal Co.
- Niddrie & Benhar Coal Co. Ltd.
- Peter Mitchell & Son
- Peter Thornton
- R. Forrester & Co. Ltd
- Robert Muir & Co. (1930) Ltd
- Robert Muir & Co. Ltd
- Robert R. Horne & Co
- Robert Stewart
- The Shotts Iron Co.
- The United Collieries Ltd.
- Thomas Greer & Sons
- United Fireclay Products
- Uphall Oil Co. Ltd. *
- Westrigg Coal Company
- Whitburn Coal Co. Ltd
- Whitrigg Fireclay Co. Ltd.
- William Baird & Co. Ltd
- William Dixon & Co.
- William Dixon Ltd
- Woodbank Mining Co. Ltd (A. & W. Park)
- Woodmuir Colliery Co.
- Woodmuir Colliery Co. Ltd.
- Young's Paraffin Light & Mineral Oil Co. Ltd *
