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I

• It will pay to inspect the tube bundles.

• The installation actually paid for itself.

• Tests indicate that the valve can pay out in 7 to 8 months.

• Recovery equipment costs less than 40,000 dollars with a payout of less than five months.

• Waste recovery pays off.

• The investment will amply repay itself in efficient service and utter reliability.

II

• If this block proves out, it will undoubtedly lead to adoption of such blocks for other cars.

• Total intravenous feeding has proved itself in the treatment of 1300 adults and more than 100 infants.

• Dye lasers still have to prove themselves in this area.

• The preceding generations of accelerators have proved their worth.

• This machinery has been proven throughout the world.

III

• Such efforts are always rewarding.