Fluorinated gases pharmaceutical industries, as well as in refrigeration when combined with other gases. PFCs were commonly used as fire extinguishants in the past and are still found in older fire protection systems. They are also a by-product of the aluminium smelting process. Sulphur hexafluoride (SF) is used primarily as an insulation gas. It can be found in high-voltage switchgear and is used in the production of magnesium. HFCs were developed in the 1990s to substitute substances such as chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs). As these substances were found to deplete the ozone layer, the Montreal Protocol lays down provisions for them
1987–88 Montreal Canadiens season 1987–88 Montreal Canadiens season The 1987–88 Montreal Canadiens season was the team's 79th season. The club qualified for the playoffs, defeated the Hartford Whalers in the first round, but were eliminated in the Adams Division finals versus the Boston Bruins four games to one. "for more information visit" 1988 NHL Entry Draft Defensively, the Canadiens were the best team in the league, finishing the regular season with just 238 goals against. They also allowed the fewest power-play goals, with just 64 Hartford Whalers vs. Montreal Canadiens The Habs almost squandered a 3–0 series lead. The deep Habs roster was the