:28:00
Well, who's down there now?
:28:03
Hold on just a second.
Hey, listen here.
:28:06
I had an engineer estimate
a new walkway.
:28:09
They had some cement left over...
:28:11
so it got caught in the rain,
it's probably ruined.
:28:14
But if you wanna haul it out,
it's all yours.
:28:17
Thanks, Dad.
:28:20
I'll be down in a minute.
:28:27
And Miss Riley wanted to make sure
you document your results.
:28:31
You will be graded
when she returns.
:28:33
You have one hour.
:28:36
Potassium chloride
has a potassium atom.
:28:39
If we mix it with sugar
and add heat...
:28:43
we'll get three parts oxygen,
two parts carbon dioxide...
:28:45
along with some
other by-products.
:28:48
In other words,
lots of good expanding gases.
:28:50
Itshould make
an excellent propellant.
:28:53
Itsmells like candy.
:28:58
Better get started.
:29:01
All right, quick.
Get rid of it.
:29:32
Mr. Bolden, have you seen
Mr. Bykovsky around?
:29:36
He's not in the shop anymore.
:29:40
Your dad sent him down to the mine.
:29:47
He's takin' it out on you
because you helped me.
:29:50
That's enough of that.
Your father is a fair man.
:29:54
If he's strict,
it's because he has to be.
:29:57
Besides, he did me a big favor,
transferring me from the machine shop.