MY GR2-GRANDFATHER, SAMUEL TAYLOR, IS LISTED AS A MECHANIC ON THE 1850 CENSUS OF LAURENS COUNTY, SC. THAT IS 200 MILES FROM THE COAST AND HAS NO NAVIGABLE RIVER. SO STEAMBOATS ARE NOT A CONSIDERATION. WE HAD TRAINS BUT ONLY A DEPOT. THERE WERE WATER-POWERED GRIST MILLS. WHAT DID A MECHANIC WORK ON IN 1850? JAMES R. TAYLOR