Before revision: 250px|The Newport ship in the foundations of the Riverfront Arts Centre in Newport, Wales, in 2002 The development of CHM CHM has its roots in the rescue archaeology and urban archaeology undertaken throughout North America and Europe in the years surrounding World War II and the succeeding decades.
After revision: 250px|The Newport ship in the foundations of the Riverfront Arts Centre in Newport, Wales, in 1902 The development of CHM CHM has its roots in the rescue archaeology and urban archaeology undertaken throughout North America and Europe in the years surrounding World War II and the succeeding decades.