11.—(1) The Department may, by notice, prohibit for a period of up to 6 months, any person who keeps animals on a holding from using for grazing by animals, other than steers, all or any part of the holding to which this Article applies.
(2) This Article applies to any holding that includes land which, during the previous 6 months, has been part of a holding on which there has been, during that period, a reactor or any animal slaughtered as a result of being in contact with a reactor.