Manufacturing new tyres, other than remoulds or retreads, involving the use in any 12 month period of 50,000 tonnes or more of one or more of natural rubber, or a synthetic organic elastomer, or any substance mixed with rubber or such an elastomer.
(a)The mixing, milling or blending of natural rubber, or a synthetic organic elastomer, in which carbon black is used.
(b)Any activity which converts the product of an activity described in paragraph (a) into a finished product, if related to a activity falling within that paragraph.