Apollo path-
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Mostly, the radio contacts consist of readouts of numbers concerning the operation of the crippled spacecraft.
The Friday afternoon landing near Pago Pago was decided upon by mission control after hours of agonizing appraisal. The pilots could have been brought in on a "super fast" return, landing at 1 p.m., Thursday, but that was ruled out as too risky.
Had the "super fast" return option been taken, it would have meant the astronauts would have had to fire their spacecraft engine for about 10 minutes.
They didn't do it because it would have used almost all the descent propulsion system fuel and if they'd had a bad burn they wouldn't have had enough fuel left to correct it a Space Agency spokesman said.
The Apollo 13 astronauts have at least 20 hours of extra oxygen for their flight home despite the breakdown in their electrical system.
Space Agency officials said Tuesday they were also confident enough water was aboard
24 KANSAN Apr. 15 1970
the disabled spaceship for the astronauts ride home.
The astronauts faced some potential problems back on earth. Officials in the splashdown area kept a worried watch on tropical storm Helen, now 247 miles southwest of Pago Pago, near the spot the astronauts are to land.
Once back on earth, the astronauts will be flown from the recovery carrier Iwo Jima to American Samoa, and from there nonstop to Houston, where their families await them.
Swigert, who joined the Apollo 13 mission as a last-minute standin for prime crewman Thomas K. Mattingly, whom officials feared was coming down with measles, is a bachelor. Lovell and Haise are married and their families live near the Houston Space Center.
Marilyn Lovell and Mary Haise spent the day alternately praying and speaking confidently of the safe return of their husbands.
At the urging of Sen. George Murphy of California, Americans were called upon to pause en masse at 9 p.m. Tuesday to join the families in prayer for the space fliers.
President Nixon cancelled a state dinner in honor of Danish Prime Minister Hilmar Bauns-
gaard and drove to the Goddard Space Flight Center, at Greenbelt, Md., to be briefed on the emergency and keep track of the flight.
The world waited and prayed for the safe return of the astronauts—a prospect which seemed to be brightening with each passing hour despite the seriousness of the trouble.
The Soviet news agency Tass carried its first report on the Apollo 13 troubles Tuesday in a brief, factual dispatch from New York.
Tass said the "three astronauts are in grave danger" but "flight officials are taking all measures to ensure their safe return to earth."
Fire damages apartments in dawn blaze
Fire broke out around midnight last night in a rooming house at 1225 Indiana. The fire was restricted to the basement with extensive smoke damage throughout the house.
The rooming house is owned by Daniel S. Ling, associate professor of physics at the University of Kansas.
Experts debate effects—
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water each day, some diabetics might drink 20 to 30 liters per day, thus ingesting 20 to 30 times more fluorine. He added sensitive persons could be harmed by very small amounts of any toxic substance.
Over—or under-mineralization of bones has been linked to fluorine, and to heart disease in animals, and higher incidences of Mongoloidism in one Illinois study. Exner said.
In his rebuttal, Katz said Exner had no scientific support for most of his examples. He said experiments are being conducted to determine how much fluoride is
retained in soft tissues, and said it is almost impossible to increase retention unless there was calcification.
"Teeth," Katz said, referring to mottling from fluorosis, "are the best witness to over-ingestion." In a study conducted in North Dakota, fluorine is credited with preventing osteoporosis, a disease in which the mass of a bone is decreased, Katz said. Exner called the case "phony," and said there was no standardization of water supplies used in the experiment.
He said the Public Health Department considers fluoridation a
closed case, and will not recognize studies which show fluoridation to be harmful. Nineteen of 20 communities which vote on the fluoridation issue vote down the proposal, he said.
In answering questions after the debate, the speakers disagreed on statistical validity of several of each others' examples. They discussed the possibility of fluoride pills, which Katz said would be expensive. Exner said they could be purchased by a community for 20 cents per thousand, and water fluoridation usually costs more than 20 cents a year per person.
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