"and mirrors for use in medical operating theatres" is a red herring, just a misleading addition, not helping those trying to help you.
"resistive layers for solar cells" is enough, or if you think that more information could be useful, quote the whole paragraph
"A.1.1. Use of Equipment and Source of Contamination
8. According to Iran,
vacuum equipment was procured in 1990 on behalf of the technical university by the former Head of PHRC because of his expertise in procurement and PHRC's business connections. The equipment was intended to be used at the Physics Department of the technical university for
the coating of items such as optical mirrors, optical lasers, laser mirrors,
resistive layers for solar cells and mirrors for use in medical operating theatres. "
http://www.isis-online.org/publications/iran/IAEA_Iran_Repor...