I volunteered to help catalog the finds from our TIGHAR aviation archaeology dig at College Park Airport in College Park, MD, last year, and am again appealing to the vast and untapped knowledge on the forum. One of our finds from what would have been the center of the original Hangar 2 at a very shallow depth is an information plate from some kind of power equipment. I’m hoping someone can offer clues as to what it might have been attached to.
The plate is aluminum (non-ferrous metal, anyway), about 1/16th-inch thick, and measures 3-inches wide by 1-7/16th-inches high. There is a mounting hole drilled in each corner. Although it’s hard to be sure, it appears that the plate had a white or silver border and dull green or brownish background paint. The lettering appears to be cast on the plate, since there are no embossing marks on the back side. The lettering, in block capitals and centered on the plate, reads:
WARNING (in 1/4-inch high letters)
OPERATE BLOWER FOR 5 (in 1/8-inch high letters)
MINUTES BEFORE STARTING (in 1/8-inch high letters)
ENGINE - GENERATOR (in 1/8-inch high letters)
Between the lines Warning and Operate Blower is a thin, elongated diamond shape 1-inch long. Any clues would be appreciated. And since I can never get the stupid [img] tag to work, please click on the link for a pic: http://home.earthlink.net/~mffowler/cp-idplate.jpg
