Traffic through the new tunnel was meagre until 1802, when the Stratford Canal provided a link to the Warwick and Birmingham Canal (later the Grand Union Canal), and hence to London.
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The principal promoter was Lord Dudley, and the route ran from Dudley to Stourton on the Staffordshire and Worcestershire.
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Trade continued to increase, reaching 100,000 tons in 1796, and continuing upwards as the iron and coal industries developed and the canal became part of a through route, following the opening of the Dudley Tunnel and the Dudley Canal's extension through the Lapal Tunnel to Selly Oak.