the Montreal Expos 4–1, in front of a crowd of 55,352. The first ball was dropped by helicopter to Mike Ryan. April 11, 1971 (Sunday) An asteroid estimated to be in diameter, , passed within of Earth with a minimum miss distance of 0.20 LD, closer than the Moon ( at its perigee). The near-Earth asteroid is small enough that it would not be discovered until 21 years later by the Lincoln Near-Earth Asteroid Research (LINEAR) telescopic observatory. Charles Coody won golf's Masters Tournament by two strokes over Johnny Miller and Jack Nicklaus. Going into the final round, Coody and Nicklaus had been tied with a score of 209 but Cody shot a final round if 70 to Nicklaus's 72 to win by two strokes at Augusta National Golf Club. Elections were held in North Vietnam on a choice from 529 candidates of the Vietnamese Fatherland Front for the 420-member National Assembly of Vietnam (Quoc Hoi Viet Nam). April 12, 1971 (Monday) Elizabeth Hazelhurst, a 21-year-old US student from Flagstaff, Arizona, fell about to her death from the edge of Mojave Point during a visit to Grand Canyon National Park. She and three friends had climbed over a safety railing in order to have a picnic on a rock ledge overlooking the Canyon. Palestinians retreated from Amman to the north of Jordan. Died: Igor Tamm, 75, Russian physicist and Nobel Prize laureate April 13, 1971 (Tuesday) American chemists Patsy O'Connell Sherman and her co-worker, Samuel Smith, and the 3M company was awarded U.S. Patent No. 3,574,791 for their invention, "Block and graft co-polymers containing water-solvatable polar groups and fluoroaliphatic groups", now a stain repellent marketed by 3M as Scotchguard. April 14, 1971 (Wednesday) A new constitution for the British-administered Gilbert and Ellice Islands went into effect, granting the South Pacific archipelago almost complete self-government on domestic affairs. The United Kingdom still made decisions regarding the Islands' defense and security, but the new law required the British Resident Commissioner (at the time, Sir John Field) to obtain the consent of an elected legislature on most matters as the territory's Governor. The new constitution also removed the Islands from the jurisdiction of the British High Commissioner for the Western Pacific, Sir Michael Gass. The Gilbert Islands would later become the nation of Kiribati and the Ellice Islands would become the nation of Tuvalu. Djoudj National Bird Sanctuary was established in Senegal. April