These cookies are absolutely essential for our website to function properly.
We use Google Analytics to measure how you use the website so we can improve it based on user needs.
These cookies may be set by third party websites and do things like measure how you view YouTube videos.
Amgueddfa Cymru – Museum Wales
87.96I/478 (1) - Envelope containing report. Addressed to Siemens Bros., Dynamo Works Ltd. 87.96I/478 (2) - Black print on cream paper with typed details in blue ink. Report entitled 'Trial Results of Belliss Engine no. 3469', Grovesend Colliery, tested 11 February, 1908.
