'[...] a very impressive compliation containing valuable overviews and insights into an economically, socially and archaeologically significant part of Devon (and Cornwall's) heritage.' Devon Archaeological Society Newsletter September 2015 `The CD and book provide a very useful resource for anyone interested in the history of the extractive industries in Cornwall and Devon' (Louise Hollick, Landscape History Vol 36, No 2 (2015) `[...] the CD... represents a very considerable compilation of mining history data, much of it available in this format for the first time. The interactive aspects are easy to operate and the structure is a model of clarity, particularly if reference is made to the appropriate explanatory text in the book.' `[...] this work is likely to prove valuable to those researching in mining and economic history' (R.C. Scrivener, Mineralogical Magazine 79, 2015) `Roger Burt and his supporters are to be congratulated on having put together the definitive work on Cornish and Devon mining Statistics in modern times.' (James Whetter, The Cornish Banner, Issue 158, November 2014)