Feb 5 (Reuters) - Dublin-based building materials supplier CRH's CRH.L UK unit intends to sell about 171.6 million ordinary shares in SigmaRoc SRC.L, exiting its entire stake in the British quarrying company, a bookrunner said on Wednesday.
(Reporting by Anandita Mehrotra in Bengaluru; Editing by Vijay Kishore)
((Anandita.Mehrotra@thomsonreuters.com;))