Ergonomic Evaluation of Hand Operated Linseed Thresher

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The prime moving force of Indian economy is an agriculture. It is also true that around 70% of our total population is dependent on agricultural related occupations. Around 85% of Indian formers are marginal and small i.e. they have less than 2 ha of land for their agricultural activity (Economy Survey, 2002). Agriculture has an important place in Indian economy and the main work force in it is human power. Table 1.1 gives the population dynamics of Indian agricultural worker and it was estimated that by 2050, the population of agricultural worker will be about 202 million of which 121 will be the female workers and 81 male workers. The word ERGONOMICS is derived from two GREEK words: ERGO (means work) and NOMOS (means rules of laws). Ergonomics is the scientific study of relationship between man-machine and working environment.