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lead
lead metallic chemical element; symbol Pb [Lat. plumbum ]; at. no. 82; at. wt. 207.2; m.p. 327.502°C; b.p. about 1,740°C; sp. gr. 11.35 at 20°C; valence +2 or +4. One of the oldest metals used by humanity, lead was known to the ancient Egyptians and Babylonians. The Romans used it for ...
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galena
galena or lead glance, lustrous, blue-gray mineral crystallizing usually in cubes, sometimes in octahedrons. It is the most important ore and the principal source of lead. It consists of lead sulfide, PbS, but frequently contains silver (it is mined for this metal in some localities) and other ...
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Pb
Pb symbol for the element lead .
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American Friends Service Committee
American Friends Service Committee (AFSC), organization est. 1917 by the Religious Society of Friends (Quakers) that provides social services and information to the public in an attempt to promote international peace and reconciliation. Based in Philadelphia, it maintains offices throughout the U...
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vermilion
vermilion vivid red pigment of durable quality. It is a chemical compound of mercury and sulfur and is known as red sulfide of mercury; it was formerly obtained by grinding pure cinnabar but is now commonly prepared synthetically. Vermilion is a good pigment for protecting iron and steel and is t...
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red lead
red lead bright red to orange-red powder, also called minium, that is used in the manufacture of storage batteries, lead glass, and red pigments; a paint made with red lead is commonly used to protect iron and steel from rusting. Chemically, red lead is lead tetroxide, Pb 3 O 4 , a water-insoluble ...
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Benjamin Church
Benjamin Church 1639-1718, New England colonial soldier in King Philip's War , b. Plymouth, Mass. He took a leading part in the Great Swamp Fight (Dec., 1675), W of Kingston, R.I., and finally hunted down and killed Philip in Aug., 1676.
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Whangarei
Whangarei , city (1996 pop. 45,892), N North Island, New Zealand, on the Pacific Ocean. It is the leading city on the Northland Peninsula and an important port for coastal trade. There are textile mills, cement and fertilizer plants, breweries, and an oil refinery in the city.
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Bathurst
Bathurst , city (1991 pop. 14,409), N N.B., Canada, on Chaleur Bay at the mouth of the Nepisiguit River. A popular beach resort, it also has 40% of Canada's reserves of lead, zinc, and silver. Its other industries include lumbering and shipbuilding.
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Enfield
Enfield outer borough (1991 pop. 249,100) of Greater London, SE England. It is residential, with important concentrations of industry. Rifles, electrical products, boilers, chemicals, cables, textiles, and cement are the leading manufactures. The poets John Keats and William Cowper lived within...
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