Heat stress climate control

Ambrose focuses on stable nitrogen isotope ratios and reports the results of controlled diet and climate experiments on rats. He explores trophic level differences and heat stress and their effects on stable isotopes of nitrogen. As with the preceding chapters by Schwarcz and Hedges and van Klinken, Ambrose explores the various biochemical principles that explain why variation is expected under these circumstances. 

Heat The source of heat stress at surface mines is primarily ambient air temperature and humidity, especially in arid and semi-tropical climates. In addition, areas with little air movement can develop in pits, which intensifies the effect of the heat. Methods for control of the exposure of miners to heat will be discussed later. 

Climate control— Where feasible and practical, use air-conditioning and ventilation to avoid heat stress. 

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