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Heat and cold
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Human beings are warm-blooded animals, and need for their internal temperature to be practically constant (37 °C ± 1°C).
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Gases and pressure devices
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Pressure devices are devices used for the production, storage, transport and use of pressurized fluids.
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Mental burden/fatigue
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Technological development in the last few years and the growing role the third world is taking in the working world have influenced decisively the workload development, increasing more and more the mental burden in the workplace.
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Labels of hazardous chemical products
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The use and presence of hazardous Chemicals products in the work and domestic environment is currently very common
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Hand tools
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Hand tools can be defined as devices used to perform work individually and that only require motive power to activate them.
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