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                                    DaveT - 11/07/2013 6:27 PM  
                                    
                                    [Choose #1] 49 CFR applies to Hazmat, not commercial or non commercial activities. Compressed air is Hazmat. 
                                 
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                                    [Choose #1] The answer is YES ! US Code of Regulations Title 49cfr 171.8 Legally you are an employee of a dive shop even if your not being paid. You are an employee when you are being used to help a dive shop even without pay. 
                                 
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                                    [Choose #1] http://www.phmsa.dot.gov/staticfiles/PHMSA/DownloadableFiles/Hazmat%20Training%20Brochure.pdf 
                                 
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                                    [Choose #1] http://www.adalefox.com/fact_&_fiction.htm 5th bullet point down addresses this specifically. 
                                 
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                                    joec1 - 9/29/2013 5:55 PM  
                                    
                                    [Choose #2] I would say yes only if commercial, and if they were filling tanks. If they are just moving tanks, then I would say no. I know that when I rent tanks as a diver I can carry them and transport them and I am not Hazmat certified. 
                                 
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                                    [Choose #1] Looks like it’s mainly regulated if the activity is considered "commercial" or business: http://www.psicylinders.com/inspectors/library/16-cylinders-are-hazmat 
                                 
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