ahlam1399
08-28-2019, 10:51 PM
Introduction Every year people at work are killed or seriously injured when they come into contact with live overhead electricity power lines. These incidents often involve: machinery, eg cranes, lorry-loader cranes, combine harvesters, and tipping trailers; equipment, eg scaffold tubes and ladders; work activities, eg loading, unloading, lifting, spraying, and stacking.
أكثر... (http://EzineArticles.com/9782301)
أكثر... (http://EzineArticles.com/9782301)