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CROSSING ICE - Continued

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Both the thickness and the nature of ice are An  ice  layer  usually  becomes  thinner  over  cur- important  in  determining  its  carrying  capacity. rent, near banks of streams or lakes, over warm Because  part  of  the  supporting  power  of  ice springs,  and  over  swampy  ground.  Rotten  ice  that is derived from the water below it, a layer of ice can be identified by its dull color and honeycomb that is in contact with the water surface is safer texture  has  little  supporting  power. than  one  that  has  no  contact  with  the  water surface. WORK  SAFELY—STRESS  SAFETY 14-47



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