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Date: 1 January 2007: Source: Ergonomic Guidelines for Manual Material Handling was prepared for publication by the Cal/OSHA Consultation Service, Research and Education Unit, Division of Occupational Safety and Health, California Department of Industrial Relations.
Manual handling of loads (MHL) or manual material handling (MMH) involves the use of the human body to lift, lower, carry or transfer loads. The average person is exposed to manual lifting of loads in the work place, in recreational atmospheres, and even in the home.
It defines a Recommended Weight Limit (RWL) as the weight of the load that nearly all healthy workers can lift over a substantial period of time (e.g., eight hours) without an increased risk of developing lower back pain. The maximum weight to be lifted with two hands, under ideal conditions, is 51 pounds.
The two-person double chair, which for many years was the workhorse of the ski industry, can move roughly 1,200 people per hour at rope speeds of up to 2.5 m/s (8.2 ft/s). [2] The four person detachable chairlift ("high-speed quad") can transport 2,400 people per hour with an average rope speed of 5 m/s (16.4 ft/s). [ 3 ]
A handling strap can help the lifting. The strap for this use should be 6 m (20 ft) long, at least 3 cm (1.2 in) wide to share out the weight and avoid the pain, and resist at least to a weight of 150 kg (330 lb). The strap is slid under the casualty: the flat profile can slide easily under the back and the pelvis without lifting the casualty.
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The Smith Tower in Seattle, Washington uses traditional elevator operators, as seen in this 2008 photo.. An elevator operator (North American English), liftman (in Commonwealth English, usually lift attendant), or lift girl (in British English), is a person specifically employed to operate a manually operated elevator.
Manual labour (in Commonwealth English, manual labor in American English) or manual work is physical work done by humans, in contrast to labour by machines and working animals. It is most literally work done with the hands (the word manual coming from the Latin word for hand ) and, by figurative extension, it is work done with any of the ...
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