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Diluted bitumen, or dilbit, is a natural oil sand found in sand deposits.

Among Beaton’s concerns is that her book will feed into stereotypes about Alberta’s oil sand workers.

The USC Sea Grant Program reported that 5,544 gallons of oil, 13.6 barrels of tar balls and 546,782 pounds of “oil sand and debris” had been collected from the Southern California coast as of Nov. 8.

Their compact and effective gray blocks, each 1.9 ounces, are made mainly from coconut oil, sand, activated charcoal and fir needle oil.

The northern Alberta oil sands spew three to five times the global average emissions per barrel of oil equivalent, according to Rystad Energy, because extracting crude from Alberta’s gumbo-like deposits of oil, sand and clay requires additional energy.