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"We've met"

The older ed and accepted Pitt's claim without comment

As they neared the botto sound Before he could ask what it was, the elevator stopped and the doors slid open He was led through a mineshaft that opened onto an observation platform perched fifty meters above the vast excavation chamber below

The equipment at the bottoht expect to encounter in a mine No cars filled with ore pulled over tracks by a s vehicles This was a well-financed, carefully designed anal organized operation that was run by computers aided in a small way by hue overhead bridge with the cables and buckets that lifted the dia blue rock-clay to the surface and carried it to the buildings where the stones were extracted

The engineer turned and stared at hireen eyes over the mask "Mason did not tell me who you are or who you represent And I don't want to know Heto trace a sound channel that travels underwater and kills"

"That's true Untold thousands of various forms of sea life and hundreds of people have already diedshorelines"

"You think the sound originates here?"

"I have reason to believe the Kunghit Island mine is only one of four sources"

The engineer nodded knowingly "Ko Sea, Easter Island, Gladiator Island in the Tas the other three"

"You guessed?"

"I know They all use the same pulsed ultrasound excavation equipineer swept his hand over the open pit "We used to dig shafts, in an atteest concentration of diaold But after Dorsett scientists and engineers perfected a newthat produced four times the production in one third the time, the old ere quickly abandoned"

Pitt leaned over the railing and stared at the action across the botto shafts into the blue clay Then cas to his body He gazed questioningly at the engineer

"The diay pulsed ultrasound" The engineer paused and pointed to a large concrete structure with no obvious s "See that building on the south side of the pit?"

Pitt nodded

"A nuclear generating plant It takes an enory at ten to twenty bursts a second to penetrate the rock-hard clay and break it apart"