This is my memory of how coal was delivered to a house and tipped at the nearest access to the rear of the house where the coal was kept in a coalhouse. It took quite some time to barrow the whole load round the back !!! The lorries would have three separate tons of coal on the back, each ton would have it’s own separate tailgate, which when opened by bottom pins on the gates, they hinged and allowed one ton at a time to slide off the lorry and be tipped. It was a common sight to see this when every house had a coal fire..