Document Yrb2jZ9KYg6aw8X4VJNDJ8EY8

June 23, 1972 Mr. Jonathan Kraushaar 5232 Forbes Avenue Pittsburgh, Pennsylvania 1&217 Dear Mr. Kraushaari Ttie Aroclors listed In your letter dated June 18 are no longer available for any application except for limited use In closed system electrical capacitors and transformers. These materials were withdrawn from all other uses because they were identified as environmental contaminants. I regret any Inconvenience the lack of these materials may cause you. I am personally not familiar with any alternative materials which 1 would recommend for your application. Sincerely, WBP/bt W. B, Papageorge Manager Environmental Protection 0*27861 4 O PCB-ARCH0753380