On 20/08/2014 20:28, Tim Streater wrote:
In article om,
"Dennis@home" wrote:

On 20/08/2014 08:54, harryagain wrote:

8

Bollix.
Evrything that comes out of the ground has to be put back.


Have fun putting the helium back.

and the radon. and the sulphur dioxide from volcanoes. And so on.


They are possible, the helium has gone, it evaporates into space.