Word: bitumen
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Dates: during 1970-1979
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...proven reserves of 28.5 billion bbl., and Mexico has 16 billion bbl.) Most significant, Alberta has huge additional "unconventional" sources of energy that are not yet economical to tap but will become increasingly feasible -and necessary-as oil prices rise. The basic sources are heavy bitumen oil and the tar sands, which together could provide as much as 320 billion bbl., or enough to supply the entire world demand for some 15 years at current rates...
...specter that terrorizes contemporary Ulster. Sections of Londonderry and Belfast are as desolated as London during the blitz, and the scarred faces of empty, bombed-out buildings are pockmarked from gunfire. Streets are blockaded by ganglia-like stretches of barbed wire and by "antiterrorist ramps"?thick bands of bitumen or concrete nine inches high that force traffic to slow to a crawl. On the red brick walls surrounding vacant lots, the children of Belfast?perhaps the most tragic victims of the war?have scrawled afresh the old slogans of idealism and hatred: "Up the I.R.A." and "Informers Beware...