§ 37.3 Chest radiographs required for miners.
(a) Voluntary examinations. Every operator must provide to each miner who is employed in or at any of its coal mines and who was employed in coal mining prior to December 30, 1969, or who has completed the required examinations under paragraph (b) of this section an opportunity for a chest radiograph at no cost to the miner in accordance with this subpart:
(1) NIOSH will notify the operator of each coal mine of a period within which the operator may provide examinations to each miner employed at its coal mine. The period must begin no sooner than 3.5 years and end no later than 4.5 years subsequent to the ending date of the previous 6-month period specified for a coal mine either by the operator on an approved plan or by NIOSH if the operator did not submit an approved plan. Within the period specified for each mine, the operator may select a 6-month period within which to provide examinations in accordance with a plan approved under § 37.101.