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Cranes and Derricks
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Place and Memory in the Singing Crane Garden
The Singing Crane Garden in northwest Beijing has a history dense with classical artistic vision, educational experimentation, political struggle, and tragic suffering. Built by the Manchu prince Mianyu in the mid-nineteenth century, the garden was intended to serve as a refuge from the clutter of daily life near the Forbidden City. In 1860, during the Anglo-French war in China, the garden was destroyed. One hundred years later, in the 1960s, the garden served as the "ox pens," where dissident university professors were imprisoned during the Cultural Revolution. Peaceful Western involvement began in 1986, when ground was broken for the Arthur Sackler Museum of Art and Archaeology. Completed ...
Sandhill Crane Study in the Central Flyway
Fall-migrating sandhill cranes arrived at congregation sites in southern Canada and in the States of the Central Flyway between late July and early October. Sandhills peaked at about 100,000 birds at way stations during the fall of 1964. Footprint measurements indicated that the lesser sandhill was by far the most numerous subspecies at way stations in Montana, North Dakota, South Dakota, and Colorado. These measurements also indicated that flocks stopping over in Wyoming, Kansas, and Oklahoma contained a significant number of Canadian sandhill or greater sandhill or both. A selective collecting program indicated that the footprint measurement technique overemphasized the incidence of the greater sandhill at way stations in North Dakota and South Dakota. Whooping cranes and sandhills were occasionally observed together during the early part of the fall migration. At times, fall-migrating sandhills fed on standing and harvested grain crops in Canada and the States of the Central Flyway, but seldom were depredations considered serious.
Official Register
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Cranes and Derricks, Fourth Edition
The Definitive Handbook on Cranes and Derricks--Updated Per the Latest Standards and Equipment Fully revised throughout, Cranes and Derricks. Fourth Edition, offers comprehensive coverage of the selection, installation, and safe use of cranes and derricks on construction sites. Written for both engineers and non-engineers by the principals of an engineering consulting firm that has helped to define the state-of-the-art in crane and derrick engineering, this authoritative guide discusses a wide range of equipment and the operations, capabilities, advantages, and disadvantages of each device. References to U.S. and international codes and standards are included in this practical resource, as w...
