Cinnabar covered with bright red powder made from cinnabar. The most popularly known use of cinnabar is in Chinese carved lacquerware, a technique that apparently originated in the Song dynasty. The danger of mercury poisoning may be reduced in ancient lacquerware by entraining the powdered pigment in lacquer, but could still pose an environmental hazard if the pieces were accidentally destroyed. In the modern jewelry industry, the toxic pigment is replaced by a resin-based polymer that approximates the appearance of pigmented lacquer. Two female mummies dated A.D. 1399 to 1475 found in Cerro Esmeralda in Chile in 1976 had clothes colored
Ore dock steel chutes. These chutes project out over the water at a slight angle from the sides of the docks. The hinged chutes, which are lowered to drop ore from the pockets into ships, are located at twelve-foot intervals over the length of the dock. This spacing is not coincidental, as the docks and the lakers they could load evolved together, and laker hatch spacing is typically 12, or on center. Since the late 1800s, ore docks have been a common sight in many Lake Superior ports of Minnesota, Wisconsin and especially Michigan. Rich iron ore deposits were first discovered in