Cement Masons Local No. 633 Apprentice Training Center - Member Directory

OPCMIA – Strength in Numbers

In 1864, recognizing that there is strength in numbers, the National Plasterer’s Union or the National Plasterer’s Organization began to unify the various crafts unions representing our trade. This new organization, the Building Trades Union, attempted to lay the foundations for standard wages, working conditions, regulated training for it’s members, a travelling card system, and exclusion for those unqualified for membership.