Please -  could Richard Boylan answer Jacky's question a
in slightly more detail .

1)Are the floating machines steel barges with plastic tanks, pumps etc on them ?

2 ) Or do they look like islands with grass , trees etc

Dave Cannon
Head Of Dept.:Environmental Health, Mangosuthu Technikon
Postal address:Box 12363,Jacobs,4026,South Africa
e-mail Davec@julian.mantec.ac.za Phone/fax031-9077242