I will ask the SB Presidio folks.   I know they have had geophysics at the 
presidio in the past.   More recently, the Institute for Canine Forensics had a 
team of Historical Human Remains Detection dogs identidfy the location of 
burials outside and UNDER THE TILE FLOOR   of the chapel!   We know who was buried 
there, just not where. It was very successful, but like other methods, also 
has limitations (in this case temperature, moisture, etc.). Lew Somers of 
Archaeophysics taught me that the best method of remote sensing is multiple 
methods.

Bob Hoover


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