Sandblasting engine manifolds at the de Havilland aircraft factory, c. 1935.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...g_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...ndblasting.jpg
Previously:
https://www.homemadetools.net/forum/...195#post103566
https://www.homemadetools.net/forum/...370#post166003
https://www.homemadetools.net/forum/...533#post158839
https://www.homemadetools.net/forum/...403#post158379
https://www.homemadetools.net/forum/...3326#post77841
