DOLE MULLS BILL TO EXTEND ETHANOL TAX EXEMPTION U.S. Senate Republican leader Robert Dole (R-Kan.) said he and a group of Republican lawmakers are considering introducing legislation to extend the ethanol tax exemption through the year 2000. Dole, addressing the National Corn Growers Association board, said the proposal was under consideration by a rural task force of Republican members of Congress and governors. Gasoline containing at least 10 pct ethanol now receives a six cents per gallon exemption from a nine cent federal excise tax. The exemption is to expire the end of 1992. Ethanol is produced primarily by a few large agribusiness firms including Archer Daniels Midland (ADM) and A.E. Staley. The tax exemption has helped bolster ethanol production despite a sharp drop in the prices of competing crude oil.