Skilled/unskilled workers in Precast ConcreteGMF Precast Ltd.GMF Precast Ltd. is seeking skilled and unskilled workers for precast concrete work. Duties include preparation of casts, prestressing of wires, production of precast concrete slabs and predalles, and keeping workplace clean and in order. Salary is based on skills and experience. Send us your C.V. on 99437538.