Gas drilling starts this week

Israel's Delek Ltd. and Texas-based Noble Energy will start drilling for natural gas this week off Israel's northern coast. Seismic surveys show the Leviathan prospect, located 135 kilometers, or about 84 miles, off Israel's northern coast, may hold 16 trillion cubic feet of natural gas, enough to supply all of Israel's gas needs for 100 years.If the exploratory drilling, which gets under way