Here's an inquiry from the PNEAC home page.
I'm a student, doing on my thesis work to obtain the degree in
Chemical Engineering. I want to recover silver from the photographic
film used in the printing industry.
I would like to have more information on that, and to know how do you
recover silver from the film in the U.S. I would appreciate if you
can give me a place where to look for, or if you have the information