... antique Limestone trough,Sandstone trough,Lavastone trough,old stone trough. Millstone,millstones,old millstone,ancient millstone,granite millstone,sandstone ... container;can save much shipping cost. We collect some old trough/millstone from the countryside, which were used in ... old and have been used along with rollers for grinding maize, rice and other grains,they are almost hundreds years old. ...