So it would seem fairly likely that small or even normal capacity
bottling plants would have stored their CO-2 in a tank somewhere
inside ... ???
Or even that those 200 gal. supply tanks were "connected
directly to the bottling line" as they were used with two or more
of them so they could switch from an empty to a full without
interrupting the bottling line.
Based upon the stated "one truck load per week" it seems
easy to conclude that the amount of CO-2, per bottle of pop,
was fairly small.
- Jim B.