Improved apparatus for enabling a person to breath fresh air while surrounded with a poisonous or noxious atmosphere, more esecially for use in saving miners from being suffocated by choke damp or after damp / [Charles Addison Ash].
- Ash, Charles Addison.
- Date:
- 1894
Licence: Public Domain Mark
Credit: Improved apparatus for enabling a person to breath fresh air while surrounded with a poisonous or noxious atmosphere, more esecially for use in saving miners from being suffocated by choke damp or after damp / [Charles Addison Ash]. Source: Wellcome Collection.
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