In a message dated 98-02-11 11:36:43 EST, you write:
 
<< I'm looking for information on arrastras that have been listed or
determined
 eligible for the National Register in the western US.  I'm particularly
 interested in how considerations of integrity have played into such
 determinations, since most examples I'm aware of have been partially
 disassembled upon abandonment.
 
... Is anyone aware of examples that  still retain some or all of their
superstructure and/or flooring?  I'd appreciate any information.  Thanks! >>
 
 
I have information on two such structures that I recorded on the Salmon
National Forest in Idaho.  They likely date to late 1860's - 1970's and appear
to be associated with some of the earliest hard rock gold mining operations in
the area.  I am also very interested in comparative information and would be
delighted to correspond with you about these structures.  One has been
severely disturbed by pothunters likely in search of gold dust in the floor of
the structure - much still remains to identify its function and work areas,
however.  The other structure is in relatively good condition and still has
much of the wood sides and functioning parts extant.  Also, I have photocopies
of early 20th Century photographs of the structure which show considerable
detail.  Both of these arrastras appear to have been water driven.
 
Mike Polk
Sagebrush Consultants, L.L.C.
Ogden, Utah