Before revision: In the early years of railways, coal was shovelled laboriously by hand into locomotive tenders, the first attempt in Britain to use gravity rather than manual labour in the refuelling process being found at Shildon, County Durham, where coal drops were built by the Stockton and Darlington Railway in 1847.
After revision: In the early years of railways, coal was shovelled laboriously by hand into locomotive tenders, the first attempt in Britain to replace manual labour by gravity in the refuelling process being found at Shildon, County Durham, where coal drops were built by the Stockton and Darlington Railway in 1847.