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Costs and profits for Morton Colliery

To Carlisle Spedding, Whitehaven, re difficulties with the vend, effects of the Keelmen's strike and Mr Humble's engines at Billy Mill.

Borings at Hartford Colliery

1725-02-17 — 1726-12-31

View of Pontop Pike Colliery, by George Johnson

From Leonard Hartley Esq, Middleton Tyas, re engine parts, supply of timber and good progress at his Middleton mine but slow progress by Mr Tissington.

To Mr Lisle, attorney at law at Morpeth, re Shadfen Colliery and the supply of coal to Morpeth, 17 April 1765.

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

1750-08-16 — 1759-06-25

To Carlisle Spedding, Whitehaven, re progress at Throckley.

From Leonard Hartley, Middleton Tyas, re meeting with Mr Seymour, preparations for resuming work and the possible supply of timber.

Costs for working Bedlington Colliery

To [Carlisle Spedding], re the death of Sir James Lowther, progress at Throckley, the Friars Goose Engines and Wylam and description of Menzies' machines.

To Leonard Hartley Esq, Middleton Tyas, re a recently discovered fault in the construction of the fire engine and Mr Menzies' construction of an improved machine to deal with his neighbour [Mr Tissington's] water.