DEFENCE REGULATION 56AB—S.R.&O., 1941, No.1642 All Employers (other than registered builders and civil engineering contractors) are required to returns of any building or civil labour employed by them in with their main business, what- may be, on Form B.C.E.4, from any Employment Exchange. The return must be completed and for- to Ministry of Works & Buildings, S.W.1, Buildings, Great Smith St., on or before December 2nd, 1941. MINISTRY OF WORKS AND BUILDINGS furnish engineering connection ever its nature obtainable warded Sanctuary Ministry of Works ###.