Hi Jon & All,
Glad you found the details of benefit.
In reviewing Will I note I missed a page concerning his Business and other Assets.He states:
" If it can be done with Propriety, I should wish the Business I am concerned in on the Sandhill to be continued as hereto done with Mr Dobson and the profits arising there from divided amongst my three natural children Elizabeth Gordon, Jane and Anne Brumwell my Daughter Catherine and my Son William Brumwell. If Messers Brumell, Monkhouse and Brumwell ever get possession of White Heaps and Ferney Gill Lead Mines, I desire my Executors will divide the profits, if there should be any, amongst ..." (He left this to the children already mentioned but also included his Daughter Isabella Buckoll and natural Daughter Harriott Brumwell, share and share alike. By the Codicil John was also equally entitled on the same basis as his brother William).
The Executors were John Brumell of Kibblesworth Durham 'Gentleman' (his brother? note spelling difference) and John Stokoe of Newcastle 'Warehouseman'. Witnesses to the Will were Mr Dobson 'Druggist', Mr Bell 'Grocer' & Mr Daglish 'Druggist'. Witnesses to the Codicil and who made an Oath as to its validity were John Clayton 'Gentleman' and John Daglish 'Druggist'.
Re The mine above searched and found the following.
Whiteheaps mine is part of a wider complex that belongs to the Hunstanworth group of mines. Originally the mine was worked for lead and was owned by the London Lead Company from about 1715. The veins worked for lead were lean, however they did have a particularly high silver content, which made them workable enterprises. The London Lead Company was followed by a number of other companies, namely Easterby, Hall and Company (1807 - 1810) and the Derwent Mining Company (1810 - 1883) who further pursued lead ore. In the 19th century deep shafts (Whiteheaps Shafts and others) were sunk to the base of the Great Limestone for lead ore extraction. The Derwent Mining Company ceased its operations in 1883 and no further lead mining took place.
Ferneygill, Ramshaw, Red and White are the main veins that Whiteheaps worked. These were accessed by a number of shafts and adits on multiple levels right down to the base of the Great Limestone. Most of the site has been landscaped and many of the features are destroyed or buried including the adits. Old OS maps refer to Low Whiteheaps and High Whiteheaps.
Ian