Cat 365C L Excavator Loading Trucs With 3 Passes

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The lower tillage intensity in Africa may simply reflect the abundance of land: in order to maximize labor productivity, people work thinly over a large area. Under the substitution view, the profitability of mechanization and its contribution to economic growth depend on the opportunities available to workers (and sometimes draft animals) released from their tasks.

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The widespread use of modern steel harrows in the United States was delayed until the 1880s, roughly fifty years after the massive shift to cast iron and steel plows. When tractors were introduced, they began to be used universally for primary tillage, while animals continued to be used for other types of soil preparation.

Amazing excavators at work, trucks, loaders, bulldozers in action, transportations, cat - caterpillar, Komatsu, Liebherr, Volvo, working and digging in mud and mines for coal.

As a consequence, the design and operation of such equipment requires increased investment in research and development to enhance their operational and performance characteristics (see also, Human and Animal Powered Machinery).

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The substantial range of tillage and seeding equipment is outlined in Tillage and Seeding Machines, EOLSS on-line, 2002) and summarized in Tables 5 and 6. Broadcast seeding and seed drilling are classical methods that are popular for sowing cereals (wheat, barley and oats) into cultivated soil.

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