A proxy war by definition is "A war instigated by a major power but itself does not get involved" I know the U.S got involved in Korea. Vietnam and had to help the British keep control during the Greek civil war so I'd go with Afghanistan since the U.S only supplied insurgent groups with weaponry and did not challenge the USSR openly.
There are significant safety challenges facing the waste/recycling industry. They include chemical exposure, combustible dust explosions, machine guarding hazards, and exposure to powerful equipment with moving parts.
he could've either made the slides more clear so there wouldn't be as many questions or he could've asked everyone to save their questions until the end. They could have written them down on post-it notes so they wouldn't forget the questions.