Subject: Extract from "An American Powder Maker in Great Britain, Lammot Du Pont's Journal 1858" Newcomen Society' Transactions Vol 47, 1974-75, 1975-76. including reference to "Granulating Machine at Waltham Abbey" with drawing.
Description: Extract from "An American Powder Maker in Great Britain, Lammot Du Pont's Journal 1858" Newcomen Society' Transactions Vol 47, 1974-75, 1975-76. including reference to "Granulating Machine at Waltham Abbey" with drawing.
