Some grew rich and became very influential. To spread their risk the new mining partners would normally have small shares in several coalworks rather than a large share in one. The cost was beyond the local miner and local tradesmen, so mining partnerships were formed between larger numbers of people with money, such as the local gentry and wealthy financiers from further afield. However by the second half of the 18th century as new and more sophisticated machines and equipment were introduced, the capital required by coalworks became even greater. The early pits were probably initiated by small partnerships which typically consisted of a coal miner and two local tradesmen, who would provide limited finance for a mining undertaking, hoping to make a profit between them. Progressively during the 18th and 19th centuries the pits became deeper Pit The table below shows the dates of operation of the the pits surrounding Timsbury.
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