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English, 26.05.2021 16:20 amadileaks

2 points 2. Prior to the 1970's, breathing systems for firefighters were very heavy
and restricted mobility. Through advances in science, lightweight
breathing systems helped firefighters reduce their heavy loads, while also
improving safety. The new systems were adapted from equipment
originally designed for

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2 points 2. Prior to the 1970's, breathing systems for firefighters were very heavy
and restr...
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