However, for the sectors of underground mining and tunnel construction, a five year transitional period, in addition to the transposition period, should be introduced before the limit value should apply.
I gcás earnálacha na mianadóireachta faoi thalamh agus na tógála tollán, áfach, ba cheart idirthréimhse 5 bliana a thabhairt isteach, de bhreis ar an tréimhse trasuite, sula mbeadh feidhm ag an teorainnluach.