In northeast China, logging has three stages; timber
harvest, transportation and the operations inside a timber
yard. The timber yard is an intermediate transhipment point between truck transport and rail transport to manufacturing centers. The transhipment capacity of the timber yard is often the limiting acitivity in the logging chain....
The Washougal Mining District is approximately 50 km (30
miles) northeast of Vancouver, Washington, along the western
slopes of the Cascade Range. Although the district has produced
the unostentatious amount of $572 in metals since 1903, the presence
of porphyritic intrusions, hydrothermal alteration, breccia pipes,
and base-metal mineralization typical of...