1:05:03
He presented us
with rock samples...
1:05:06
anywhere from
the size of your thumb up to
half the size of your fist.
1:05:11
We broke 'em up
with a hammer...
1:05:13
so that we could get
a sub-sample,
1:05:16
placed it in a flask,
1:05:19
add concentrated
sulfuric acid.
1:05:23
And it undergoes
a reaction.
1:05:26
It produces
a red-colored solution.
1:05:30
It is the intensity
of this red color...
1:05:34
that we can relate
with cyanide concentration.
1:05:45
And you have to look
at what happens to cyanide...
1:05:48
when it reacts with a wall.
1:05:52
Where does it go?
How far does it go?
1:05:58
Cyanide
is a surface reaction.
1:06:01
It's probably
not going to penetrate
more than ten microns.
1:06:05
Human hair's
a hundred microns in diameter.
1:06:10
Crush this sample up.
1:06:13
I have just diluted
that sample...
1:06:16
ten thousand,
a hundred thousand times.
1:06:22
If you're gonna go look for it,
you're gonna look
on the surface only.
1:06:26
There's no reason
to go deep...
1:06:29
because it's not going
to be there.
1:06:35
Which was the exposed surface?
I didn't even have any idea.
1:06:41
That's like analyzing
paint on the wall.
1:06:45
By analyzing,
they timber this behind it.
1:06:50
If they go in
with blinders on,
1:06:53
they will see
what they want to see.
1:06:58
What was he really
trying to do?