Document 5DgLvw5eENvEqdrE2oDv90pv8

Page 177 1 identification by the court reporter.) 2 BY MR. RUCKDESCHEL: 3 Q And what I'd ask you to do, Dr. Paustenbach, 4 is to make sure that this list is accurate, that you 5 have in fact worked, provided professional services 6 regarding these substances in your career, and then 7 we'll move on from there. 8 A By and large these are chemicals that I've 9 studied during my career. They don't all follow the 10 path that we discussed. I've done no substantial work 11 on DES. I've done a little bit of work on DES. 12 And just a little on nitroglycerin. 13 MR. LANKFORD: Counsel, can you -- 14 BY MR. RUCKDESCHEL: 15 Q Do you need a break, Doctor? 16 A The phosphorous was from a phosphorous industry 17 where the radionuclides were found. And except for 18 spellings I would say these are all chemicals that I 19 know something about. 20 MR. LANKFORD: If we could take maybe a 21 10-minute brake at 2:00 o'clock for a few minutes? 22 MR. RUCKDESCHEL: Absolutely. Can you give me 23 one more minute on this with the doctor, and I think 24 we'll be done with it. 25 MR. LANKFORD: Sure. ESQUIRE DEPOSITION SERVICES (415) 288-4280