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heating/ac/refrigeration training at ayers career college This program is designed to provide students with entry-level knowledge and skills to install and repair heating, air conditioning, and commercial equipment. 2022-06-16 20:21:00
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head protection: does it matter what hard hat i choose? yes, here is why By the area of the head that they protect and, Hard hats fall in to one of two types defined should meet ANSI Z89.1-2014 and or CSA Z94.1-15 North America Standards. Below are the two types of hard hats. in the past