(Discussion between Counsel Jenner and the Witness Mamantov off the record.) Mr. JENNER. On the record. If he wishes--it will be Thursday morning probably--we would like to have it ready for you to read over, would that be convenient for you? Mr. MAMANTOV. Yes, sir. Mr. JENNER. If you will come up to this office then, Thursday morning, then one of the other of us will be here and a transcript of your testimony will be available to you to peruse if you wish. Mr. MAMANTOV. My name as you used my name was misspelled--I don't know if you want that--it was misspelled on my letter sent me. Mr. JENNER. When I examine you I will have you spell your name. Go ahead and spell it for us now. Mr. MAMANTOV. It's M-a-m-a-n-t-o-v [spelling], it is an "an" and not "en" as you have it. Mr. JENNER. All right, give your full name and spell it. Mr. MAMANTOV. I'll give you my full name. Mr. JENNER. And how do you pronounce that full name? I-l-y-e [phonetic spelling], or I-l-a [phonetic spelling]? Mr. MAMANTOV. I-l-y-a [spelling], A. M-a-m-a-n-t-o-v [spelling], and the address has been changed in the meantime too--to 2444 Fairway Circle, Richardson, Tex., Zip No. 75080, if it is important. Mr. JENNER. Did you give your telephone number? Mr. MAMANTOV. AD-5-28--2873, it's a new number. Mr. JENNER. Mr. Mamantov, the Commission desires to inquire of you because of your acquaintance with the De Mohrenschildts, and your work with the Dallas City Police on November 22 and 23. Mr. MAMANTOV. The 22d. Mr. JENNER. The 22d only, and you translated for Marina Oswald in that connection? Mr. MAMANTOV. Right. Mr. JENNER. Your acquaintance with the Russian emigre group in the Dallas-Fort Worth area and especially your acquaintance with Marina to the extent you had one. You have given your full name and your full address. What is your business, profession, or occupation? Mr. MAMANTOV. A research geologist with Sun Oil Co. Mr. JENNER. And how long have you held that position? Mr. MAMANTOV. Since 1955. Mr. JENNER. And is that your profession--a geologist? Mr. MAMANTOV. That's right. Mr. JENNER. And prior to 1952, your employment was? Mr. MAMANTOV. With the Donnally Geophysical Co. here in Dallas as seismologist. Mr. JENNER. And over what period of time did that work extend? Mr. MAMANTOV. It covers 1951, the summer of 1951 until the fall of 1955, when I took my present job. Mr. JENNER. Let's take one step back--by whom were you employed, or with whom were you associated, prior thereto? Mr. MAMANTOV. Lion Match Co. Mr. JENNER. L-y-o-n [spelling]? Mr. MAMANTOV. L-i-o-n [spelling] Match Co. in New York. Mr. JENNER. In what capacity? Mr. MAMANTOV. As a production scheduling or scheduler for the machines. Mr. JENNER. I take it, then, though, you were a trained geologist, you at least at that phase of your career you were not pursuing your profession or your particular calling?