Complex sentence: Clear dates when St Cuthbert's Limeworks, the quarries to its north and the joining waggonways closed have not been unearthed, but all limewinning at Coves and Acre quarries had passed to Nessend Quarry by 1861.
Split into simpler sentences: Clear dates when St Cuthbert's Limeworks, the quarries to its north and the joining waggonways closed have not been unearthed. All limewinning at Coves and Acre quarries had passed to Nessend Quarry by 1861.