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From LA Times:
Twenty-five miners were killed Monday after a coal mine
explosion deep in the rugged hills of West Virginia, marking
the worst U.S. mine disaster since 1984 and raising
questions about safety precautions at one of the nation's
largest coal producers.
The search for survivors at the Upper Big Branch mine was
called off early Tuesday morning, although four miners
remained unaccounted for, according to Jeff Gillenwater,
spokesman for Massey Energy Co., the mine owner.
Distraught families and others in the tight-knit Appalachian
mining community wept and hugged nearby as rescue teams
penetrated the deep shafts and dark tunnels, and as the
death toll steadily rose through the long night.
The explosion about 3 p.m. Monday had disabled communication
lines, including wireless systems, inside the vast
underground complex, officials said.
Though this is a US-centric disaster, it is symbolic of the
dangerous work required to produce the energy in our current
system. The GCP event was set for 2 pm to 8 pm, local time
(18:00-24:00 UTC). The result is Chisquare 21573 on 21600
df, for Z = -0.122 and p = 0.547.
It is important to keep in mind that we have only a tiny
statistical
effect, so that it is always hard to distinguish signal from
noise. This means that every "success" might be largely
driven by chance, and every "null" might include a real
signal overwhelmed by noise. In the long run, a real effect
can
be identified only by patiently accumulating replications of
similar analyses.
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