Mr. W. A. C. Weeramanthree, Technical officer (Gr.II Seg. B),Civil Research, Laboratory, Tel. 011 2 881 362 Ext. 4307 .</span Mr. U.I. Hettihelage, Technical officer (Gr.II Seg. A),Civil Laboratory (Block No. 1), Tel. 011 2 881 480 Ext. 4315 .</span Mr. I.D Darshana Lal Technical officer (Gr.II Seg. A),Civil Laboratory (Block No. 2), Tel. 011 2 881 262 Ext. 4302 . Mr. G. K. L. Dayawansha, Laboratory Attendant (Grade ll ),Civil Research Laboratory, Tel. 011 2 881 362 Ext. 4307 .</span Mr. M. R. S. K. Vipulasena, Laboratory Attendant ( Grade l ),Civil Laboratory (Block No. 2), Tel. 011 2 881 262 Ext. 4302 . Mr. D. C. G. Fernando, Laboratory Attendant (Grade ll ),Civil Laboratory (Block No. 1), Tel. 011 2 881 480 Ext. 4315 . Last Updated on 10 months