NASA Official

Clifford E. Charlesworth, 59, former director of space operations at the Johnson Space Center and a flight director of the Apollo 11 moon landing, died Jan. 26 after collapsing at his home in Friendswood, Tex. The cause of death has not been determined.

He served as flight director for the Gemini and Apollo missions and was one of the flight directors on the Apollo 11 mission, the first to land men on the moon, in 1969.

He also served as deputy manager for the Skylab Program, manager of the Earth Resources Program Office at Johnson Space Center and deputy manager of the Shuttle Payload Integration and Development Program Office. He retired in 1988.


Ashland Oil President

Robert E. Yancey Sr., 69, a retired president of the Ashland Oil Co. and former chairman of the National Petroleum Refining Association, died of cancer Jan. 27 at a hospital in Russell, Ky.

He joined Ashland in 1943 and was named a vice president for refining in 1956, and administrative vice president in 1959. He served as head of the company's chemical and petroleum subsidiaries before becoming company president in 1972. He held that post until retiring in 1982.


Medal of Honor Winner

Charles W. Davis, 73, a retired Army colonel who won the Medal of Honor, the nation's highest award for valor, while a captain in the 25th Infantry Division on Guadalcanal during World War II, died Jan. 18 at a hospital in San Francisco after a heart attack. On Guadalcanal, he volunteered to carry orders to units pinned down by Japanese machine-gun fire, then led the units in assaults on the enemy posts. Charges he led routed the enemy.

Col. Davis spent 32 years in the Army before retiring in 1972. After World War II, he served with the 11th Airborne Division, graduated from the National War College and served in Vietnam in 1966 and 1967.


Panamanian Writer

Jose de Jesus Martinez, 61, a writer and mathematician who once was regarded as the closest adviser to the late Panamanian leader, Gen. Omar Torrijos Herrera, died Jan. 27 at his home in Panama after a heart attack.

A native of Nicaragua, he became a citizen of Panama and served in its National Guard, becoming a sergeant. He accompanied Torrijos on his trips abroad. Mr. Martinez became a poet and won prizes for such plays as "La Perrera" and published a biography of Torrijos.

Mr. Martinez was described as "Sgt. Chuchu" by Graham Greene in his 1984 book about Torrijos, "Getting to Know the General."


Du Pont Chemist

R.C. McHarness, 83, a retired E.I. du Pont de Nemours & Co. research chemist who was a pioneer in the development of the manufacturing process of Freon and Teflon, died of pneumonia Jan. 26 in Hockessin, Del.

Mr. McHarness joined the Du Pont Co. as a research chemist in New Jersey in 1930 and retired in 1967. During World War II, he worked on the Manhattan Project, the government project that led to the first atomic bomb.