The loss of part of the great rocket's past was to be expected but resurrecting that data has proven more difficult than some rocket builders expected.

Three rocket builders now form the core of America's commercial industry.

A similar firewall would prevent Boeing's satellite division from passing on to the rocket builders any information about other makers of launching vehicles.

The rocket builder, Lockheed Martin, has a $16 billion contract to build about 40 rockets for the Government, meaning an average cost of $400 million.

Rotzog isn't afraid of any rocket builder in this world except you.

You're the only rocket builder who has solved the secret of harnessing the sun's energy to do your work for you.

The other partners are Kvaerner Maritime, a Norwegian ship builder, and rocket builders from Russia and Ukraine.

Mr. Killgore, a former aide to Mr. Chappell, was then an official with the Washington office of Avco Corporation, a rocket builder, the newspaper said.

Mr. Yakovlev is 66 now, a retired rocket builder.

The two other major rocket builders, the General Dynamics Corporation and the Martin Marietta Corporation, say they also intend to compete for payloads.