=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 2001Jan02 :
Recent work on vertical land movements in the UK can be found from
the University of Nottingham web site:
http://ukcogr.iessg.nottingham.ac.uk/~eosi/
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 20-FEB-92 :
TG ZERO (1978-80) = ODN - 2.8M = ACD BUT NO KNOWN BM DETAILS
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 20-SEP-94 :
Chatham: Munro gauge/stilling well

