We have the attached letter, and reference to a book owned by him in Jamaica published 1851 is found via Google. Now a London paper takes up his desperate story for more money.
Lowry was a miner from Truro, arriving 1853, and seemingly leaving 1855, dying 1861.
London Daily News 24 August 1855
The directors of the Port Royal and St. Andrew's Copper Mining Company have received a report from Mr. Henry Lowry, upon his return to this country, in which he observes as follows : The English staff consists of 11 men and your mining agent. Captain Ciernes, Labour is generally abundant, and the natives are likely soon to become tolerably efficient workmen. It is my decided conviction that the operation, at Silver Hill ia particular, will result favourably ; the lode is the only quartz lode (I have brought specimens for your inspection) which I have seen in Jamaica, and is in every respect promising as could be desired. I believe nothing but a little perseverance will be requisite to make Silver Hill an important and profitable mine. As the operations have proceeded, nothing has occurred to alter my convictions ; the continuity of the lodes and branohet has been established from level to level, and nothing can exceed the regularity and compactnett of the formation in No, 2. I think any company would be warranted in spending a much larger amount of capital than has already been spent in the operations here, if it should be required, and I have no hesitation in recommending you to to effectual and complete development of the mineral ground.