A field worker in Florida is loading orange crates into trucks. It is quite hot and humid with wet bulb temperature = 82?F, globe temperature = 87?F, and dry bulb temperature = 82?F. It is estimated that each lift of the 30 lb box requires 0.67 kcal of energy. He is expected to load 10 boxes/min. What is the WBGT? What is the relative humidity? Is this an acceptable workload? Redesign the task (keeping the standard crate size/load the same) so that this would be acceptable work and also so that he is most productive.