James Brindleys inverse syphon at Wet Earth Colliery in Clifton is only 2 miles from my house. I never knew how it worked but for 17-something or another it was quite a feat of engineering apparantly. Used water from the river, which it went under, to draw water from the mine.

Too complicated for me - perhaps some engineering type could use words of one sylable to explain it to me one day:-)

Cheers

DtG