> as lemmas

1888 Scribner's Mag. May 576/1 They [sc. explosives] are used in the petroleum industry to ‘shoot’ the wells, so as to remove the paraffine which prevents the flow of oil.

1948 Life 6 Sept. 37/1 (advt.) Paraffin wax—a very useful by-product of the petroleum industry.

1992 Economist 29 Feb. 46/2 Mexico has opened parts of its petroleum industry—the number of basic petrochemicals forbidden to foreign ownership has been reduced.