Honister Slate Mine  The Honister Slate Mine in Cumbria is the last working slate mine in England. Quarrying for Westmorland green slate has been taken place in the area since 1728. Apart from the mining, it is also a popular tourist attraction in the Lake District National Park. Opencast quarrying had been carried out at Honister since the late 17th century. But as capacity increased, the site's underground workings were extensively expanded. By 1870 Honister's underground workings stretched under Honister Crag with intermediate workings on the opposite side of the valley at Yew Crags. Smaller-scale underground workings on Dubbs Moor, together with a small opencast quarry. Packhorse teams had been used to remove the finished slate on sleds from mines. This involved bringing the loads down steep paths that traversed the cliffs to the top of Honister Pass (The Hause). Dubbs mine was known for its 'smaller metal' (metal being the terminology for slate), in that smaller pieces of slate (thus smaller slates) were obtainable due to the geology; but this did give rise to some instability. In 1879 the mine's new owners - who also leased and operated other quarries in Borrowdale - installed self-acting inclines to serve both the Honister and Yew Crags mines. Despite the cost to build these feats of engineering, the financial outlay proved correct as they improved efficiency in the mines. For instance the Dubbs Quarry incline allowed slate to be pulled up and then down into the valley to The Hause. Although by mid-1920s, aerial ropeways now served the Honister and Yew Crags Mines, the external Yew Crags incline proved to be so efficient it remained in use until the late 1960s. A petrol-driven narrow-gauge locomotive was used to make the connection between the Hause/slate works and the incline and short aerial ropeway. A bridge carried the railway over the Seatoller-Buttermere road. The bridge was scrapped in the early 1970s. By 1891 production had reached 3,000 tons a year and more than 100 men were employed in the mines. The mines reverted to care and maintenance for a while due to labour shortages in First World War. However it did not take long for production to recommence after the cessation of hostilities. By 1926, following a change of management and a new Resident Director, Robin Hoare, the mine's fortunes began to improve with significantly increased production.