A leader in this industry’s debt to the Waldorf Astoria owner caused his Wardenclyffe Tower to be blown up for scrap. Citizens of Schenectady legendarily came up with an extra $7,500 to lure a titan in this industry, who spent his later years searching for a domestic source of rubber in the Everglades. A company in this industry developed (-5[1])a two-part “stopper” product to fulfill a contract with the Chicago’s World Fair, which displayed its (*) “Egg of Columbus.” Tensions in this industry were raised by William Kemmler’s botched execution. A pioneer of this industry (10[1])ran an “Invention Factory” (10[1])that contained early phonograph prototypes and backed a “direct” system over his rival’s (10[1])“alternating” (10[1])design. For 10 points, George Westinghouse feuded in what industry’s “war of the currents” with Thomas Edison? ■END■ (10[1])