Blackman Ventilating Co

Blackman Ventilating Co of Bradford, Bristol, Glasgow, London and Manchester
- 1891 Ventilation systems
- 1894 June. Royal Agricultural Society's Show. Several fans, some driven by the 'Trusty' engine
Sources of Information
- Directory 1891 Worrall's Cotton Spinners
- The Engineer of 29th June 1894 p562