Chromium

Chromium is a chemical element; it has symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard, and brittle transition metal.

Prof Louis Nicolas Vauquelin FRS(For) HFRSE (16 May 1763 – 14 November 1829) was a French pharmacist and chemist. He was the discoverer of both chromium and beryllium.

Chrome plating (less commonly chromium plating) is a technique of electroplating a thin layer of chromium onto a metal object. A chrome plated part is called chrome, or is said to have been chromed. The chromium layer can be decorative, provide corrosion resistance, facilitate cleaning, and increase surface hardness. Sometimes a less expensive substitute for chrome, such as nickel, may be used for aesthetic purposes.

Adams Plating, also known as Adam's Plating, is a 1-acre (0.40-hectare) Superfund site in Lansing Charter Township near Lansing, Michigan.

From 1952 to 1966, Pacific Gas and Electric Company (PG&E) dumped about 370 million U.S. gallons (1.4×10 liters) of chromium-tainted wastewater into unlined wastewater spreading ponds around the town of Hinkley, California, located in the Mojave Desert about 120 miles (190 kilometers) north-northeast of Los Angeles.

Baltimore Chrome Works was a chromium ore refinery with its headquarters and main factory located at Fells Point, Baltimore, USA. Isaac Tyson started mining chromite in the area around Baltimore in 1813 and built the Baltimore Chrome Works at Fells Point in 1845. The works became part of Mutual Chemical Company in 1908, and merged into Allied Chemical in 1954. The plant, which was rebuilt in 1951, employed 375 people at peak production.

Lake Chichoj is located near the city of San Cristóbal Verapaz, in the department of Alta Verapaz, in Guatemala. It is 1 km (0.62 mi) long, 0.5 km (0.31 mi) wide, with an area of 0.5 km (0.19 sq mi), an average water volume of [], and a maximum depth of 32 m (105 ft).