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This standard applies to all types of electrically controlled indoor and outdoor power circuit breakers, including circuit breakers in switchgear cubicles and in metal-clad switchgear, having an interrupting rating of 50 megavolt-amperes (mva) or higher and a voltage rating above 1500 volts. This standard applies for any source of circuit breaker operating energy, such as solenoid, motor, spring, compressed gas, etc, for any type of operating mechanism and for both a-c and d-c control power.

Switching circuits. --- Standards.

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Standards. --- Building materials --- Elasticity

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Eugene R. Black, President of the International Bank for Reconstruction and Development, spoke about the happenings in the Middle East which threatened to bring major economic dislocation and, at times, the world outlook had been bleak. He mentioned about the large amount lent by the Bank and important additions to its capital resources during the fiscal year 1957. He explained two loans for air transport that helped Australia and India to acquire the latest types of aircraft for their air lines. He concluded by saying that the Bank should make, over the years ahead, a continued and significant contribution to the capital requirements of basic development on which higher living standards depend.

Living Standards --- Private Investment

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Standards. --- Welding. --- Machine tools --- Mechanical engineering

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Age and employment --- Performance standards --- Footwear industry --- Furniture industry and trade.