Chemical weapons in World War I volatile oily liquid. It was introduced as a vesicant by Germany in July 1917 prior to the Third Battle of Ypres. The Germans marked their shells yellow for mustard gas and green for chlorine and phosgene; hence they called the new gas "Yellow Cross". It was known to the British as "HS" ("Hun Stuff"), and the French called it "Yperite" (named after Ypres). Mustard gas is not an effective killing agent (though in high enough doses it is fatal) but can be used to harass and disable the enemy and pollute the battlefield. Delivered in artillery shells, mustard gas was
Shale gas by country and onshore. The government hopes that these new regulations will attract international as well as national investments. The vital part of this new regulation is that the government now treats oil and gas as oil and natural gas. The government also acknowledges the fracking technology, which makes shale gas exploration possible. There are some challenges in shale gas development in Indonesia even though that it has abundant resources of shale gas. First, there is a concern that hydraulic fracturing technology could affect the water system in certain areas. Advance and better technology must be applied if the developer wants to