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Most of the warehouses using Phantom Auto's technology fence-off the space where the remote-controlled forklifts work, says Mr Katz, to avoid people accidentally stepping into the path of one of the vehicles.

At the moment, there is little political motivation to assist PG&E, whose bankruptcy announcement prompted the company to fence-off the entrance to its $1 billion San Francisco headquarters for fear of demonstrations.

Tied for first place with the defending champion, Joseph L. Levis, and the national three-weapon champion, John R. Huffman, he made spectacular use of the parry-riposte, beat them both in a triple fence-off last week.

They knew that the announcement was technically incorrect�a defeat for Miss Mayer would mean a fence-off�but they knew also that a defeat for Miss Mayer was highly improbable.

Miss Lloyd, having lost three earlier bouts, was not qualified for the fence-off, in which Miss Mayer faced Dorothy Locke, defending champion.