I have found useful albeit it does not give individual workings
PP HC 1896 (C 7953) xxii 585 report of the inspector of quarries Kent
Middx Surrey Sussex Wales pursuant to quarries Act 1894, 1st report
607 mineral industry report
no. of persons employed by county, quantity and value of all minerals
produced 1893-4
799 minerals raised 1894-5
995 index
also includes reports on mineral production in foreign countries
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