ILL. Arnold Ray Miller, 54, beleaguered president of the United Mine Workers union; with a mild stroke suffered two days after signing the controversial contract that ended his 5 1/2-month grind of negotiations with the Bituminous Coal Operators Association and brought disgruntled miners back to work last week; in Miami.

ILL. John Wayne, 70, craggy hero of some 200 movies; with suspected respiratory ailments following bouts of flu and pneumonia; in a hospital in Boston.

DIED. Dr. Wadi Haddad, 49, co-founder of the Popular Front for the Liberation of Palestine (P.F.L.P.) along with fellow physician Dr. George Habash, and mastermind of many spectacular anti-Israeli terrorist acts, including the hijacking of four airliners in one operation in 1970 and the seizure of the Lufthansa airliner stormed by West German commandos at Mogadishu late last year; of an undisclosed illness; in East Berlin.

DIED. Dr. Charles Herbert Best, 79, co-discoverer of insulin; of a ruptured abdominal aorta suffered after learning that his son Alexander, 46, had died of a heart attack; in Toronto. In 1921 Best and the late Sir Frederick Banting began working on Banting's theory that the then fatal disease diabetes could be treated with a hormone from an animal pancreas. Holed up eight weeks in their lab, the two isolated insulin. Best later devised a method of drying and storing blood serum and pioneered development of the drugs histamine, heparin and choline.

DIED. George Papashvily, about 80, undauntable Russian emigrant who turned his scuffling initiation to America into a humorous bestseller, Anything Can Happen; in Cambria, Calif. His father in Soviet Georgia taught him swordmaking, but Papashvily washed dishes and raised chickens after reaching Ellis Island in 1922. His U.S.-born wife Helen put his misadventures to paper in 1944, and four more books followed. Papashvily also found success as a sculptor of animals.

DIED. Germain Seligman, 85, art merchant and scholar who helped win recognition in the U.S. for painters of his native France; in New York. After serving with distinction in the French, Greek and American armies of World War I, Seligman immigrated to the U.S. in 1921 and inherited his father's art business, Jacques Seligmann & Co. Germain championed Picasso, Seurat and Toulouse-Lautrec as well as earlier French artists whose work had escaped critical acclaim.

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