; (bb) worked, during the period described in clause (i)(I), in two or more of the following positions: miner, miller, core driller, and ore transporter; (cc) meets the requirements of paragraph (4) or (5), or both; and (dd) submits written medical documentation that the individual developed lung cancer or a nonmalignant respiratory disease or renal cancer or any other chronic renal disease, including nephritis and kidney tubal tissue injury after exposure to radiation through work in one or more of the positions referred to in item (aa); . (e) Dates of operation of uranium mine Section 5(a)(2)(A) is amended by striking December 31, 1971 and inserting December 31, 1990 . (f) Special rules relating to combined work histories Section 5(a) is amended by adding at the end the following: (4) Special rule relating to combined work histories for individuals with at least one year of experience An individual meets the requirements of this paragraph if the individual worked in one or more of the positions referred to in paragraph (1)(A)(ii)(III)(bb) for a period of at least one year during the period described in paragraph (1)(A)(i)(I). (5) Special rule relating to combined work histories for miners An individual meets the requirements of this paragraph if the individual, during the period described in paragraph (1)(A)(i)(I), worked as a miner and was exposed to such number of working level months that the Attorney General determines, when combined with the exposure of such individual to radiation through work as a miller, core driller, or ore transporter during the period described in paragraph (1)(A)(i)(I), results in such individual being exposed to a total level of radiation that is greater or equal to the level of exposure of an individual described in paragraph (4) . . (g) Definition of Core driller Section 5(b) is amended— (1) by striking and at the end of paragraph (7); (2) by striking the period at the end of paragraph (8) and inserting ; and