Yes and there still is a massive amount that could be recovered,
Alaska
Oil (petroleum)
Texas and Alaska
Food processing (fish products) are Alaska's leading manufacturing activity. Petroleum products are another manufactured good from Alaska.
Petroleum/oil
Alaska, Texas, Louisiana, Oklahoma, California,
Alaska is one of the largest producers of petroleum and gas. Seafood is also a main product in Alaska. Exported products include salmon, crab, and cod.
Pennsylvania, Nebraska, Alaska, and Ohio.
The oil fields in Alaska are located on the Alaskan North Slope. These fields are in the NPRA(National Petroleum Reserve-Alaska) and the ANWR (Arctic National Wildlife Refuge)
Alaska has two major industries: petroleum and fishing (seafood). The federal government provides more jobs than each of these industries, with the petroleum industry providing almost as many jobs as the rest of their industries combined.
Oil resources are most abundant in Alaska. They are also most abundant in Texas ans Alberta.
Florence Marie Robinson has written: 'Core tests and test wells Oumalik area, Alaska' 'Test wells, Titaluk and Knifeblade areas, Alaska' -- subject(s): Alaska, Foraminifera, Fossil, Fossil Foraminifera, Micropaleontology, Paleontology, Petroleum 'Core test, Sentinel Hill area and test well Fish Creek area, Alaska' -- subject(s): Alaska, Borings, Geology, Petroleum, Arctic Coastal Plain