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To Leonard Hartley Esq, Middleton Tyas, re delivery of parts for the engine.

From Henry Masterman, London, re Mr Barkas' unfavourable reports of prospects for the workings at Throckley Moor.

From Henry Masterman, London, re the best place for the erection of the engine with regard to boring results, request for a plan showing the Throckley Pits and working the pillars and walls in the Tryall and Industry pits.

Lease of a house at Bryans Leap [Brains Lope]

Minute Book containing minutes of the Court of Assistants of the Governer and Company.

1851-12-04 — 1855-09-13

Scope and Content From Henry Masterman, Little London, re Heddon and Throckley leases and problems with Mr Barkas re financial affairs.

Plan and section of the workings in the Flakebrigg and Sharnberry Levels (Teasdale)

To Thomas Parke, Lowrow, Swaledale, with detailed instructions re the construction of a pumping engine at Swaledale.

Plan and section of workings in Middlecleugh 1st. Sun Vein (Alston Moor)

Minute Book containing minutes of the Court of Assistants of the Governer and Company.

1728-02-06 — 1732-04-11

From Henry Masterman, London, requesting a progress report and complaining of the poor quality of the coal shipped to London.

To Matthew Ridley Esq M.P. at Burlington Street, London re the completion of the arrangements for the lease of St Anthony's Colliery and problems at Tanfield Moor Edge.