On Thu, 16 Aug 2007 04:24:19 -0400, "R.H."
wrote:

Set 193 has just been posted:

http://puzzlephotos.blogspot.com/


Rob
1063 - Concrete block casting machine, the vertical elements are
raised under power of the small IC engine and dropped in sequence to
compact the mix around the cores. The mold is filled, struck off, the
cores are withdrawn, the clamps are released and the block is tipped
out on it's wooden base and set aside to cure. A new wood base is
placed and clamped and the process repeated.
Gerry :-)}
London, Canada