March 19, 1997

Dr. H.B. Vo

Department of Physics and Astronomy

University of Calgary

2500 University Drive, N.W.

Calgary, AB T2N 1N4

Re: Portable Low Brightness Source

Dear Hien:

I am enclosing with this letter two photographs showing the Portable Low Brightness Source, to help the Science Workshop staff figure out what the plans mean. One of the photographs shows the PLBS inside the thermal enclosure that José Lopez built for it. I would appreciate it if you could return the photographs to me when you are finished with them, but keep them as long as you need to.

I have also arranged for the original PLBS to be shipped back from Eureka at the end of this season. If necessary, I could lend it to you so the Workshop staff can see what they are supposed to build. Please let me know your wishes ASAP so I can give instructions for the shipping address to which the PLBS will be sent from Eureka.

I hope these photographs help the machinists make sense of the drawings. Lanny Murdock might also be able to help, although it's some time since he had anything to do with the PLBS.

Let me know if you need any more information.

Best regards,

David P. Steele, Ph.D.

Encls.