TABLE Z-5b.-Mine production of recoverable zinc in the United States in 1956 and in 1957 by months 1 1 Revised figures. * Based on number of days in the month without adjustment for Sundays and holidays. States east of the Mississippi TABLE Z-5c.-Production of slab zinc in the United States, according to grade1 1 U. S. Bureau of Mines; distilled and electrolytic zinc, primary and secondary. 2 American Zinc Institute, preliminary (with deduction for metallurgical losses in converting grades). TABLE Z-6.-Reported consumption of primary zinc in the United States 2 Adjusted to include consumption of smaller users not reporting to USBM, plus estimated quantity of zinc recovered from old scrap and consumed in forms other than slab. 3 Estimated: |