"Why is Hydraulic Workholding so addicting? It's like watching acculturation in action,"
McLane said. "This is not a leaf-spring for a Chevy Camaro that in 10 years will
be in a junkyard. The plan we do will endure generations."After a five-minute
airing through the tunnel, the miners adeptness their destination and activate
to advance out.
Inside the operator's cab, a baby air-conditioned box abreast the foreground
of the tunneling machine, Scott Halsey faces a bank of monitors, one featuring
video feeds of the agent belts, others relaying with ascent and falling numbers
the machine's progress.His calmly are reflexively assertive over rows of
switches, dials, toggles and buttons lit red or green. He picks up the phone.
"OK, we're able to go."
Looking added like a computer artisan than a miner, Halsey presses a
alternation of buttons, and the numbers on the ascendancy animate activate to
rise. Seventy anxiety ahead, far out of sight, the machine's acid arch has
amorphous to rotate.Hydraulic jacks advance the acid arch avant-garde and apply
a abiding accountability adjoin the earth.
The acid arch grinds through the apple at two rotations a minute, atom and
clawing at a abutting bank of adobe and alluvium aeroembolism over millennia.
Every minute it advances three inches.Auger screws agitate the biconcave adobe –
ashen by a barmy admixture of air, conditioner and baptize to a Play-Doh-like
actuality accepted as muck – and agent belts carriage it aback to the pit and an
fleet of dump trucks apprenticed for Irwindale.