Silk being rolled up, weighed and checked at a customs office. Chinese tea being tested by health inspectors. Coffee in large sacks being tested. Coffee importers roasting, weighing, and tasting coffee samples. Large shipyard with building and repairing taking place. Naval shipyard with huge crane lifting equipment and supplies and men loading onto ships. Industrial plants around San Francisco Bay, oil refineries, C&H sugar plant, smoke stacks, steel mill with sparks flying about, train carrying goods, wheels spinning.