[Code of Federal Regulations] [Title 40, Volume 29] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR426.50] [Page 33] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 426_GLASS MANUFACTURING POINT SOURCE CATEGORY--Table of Contents Subpart E_Float Glass Manufacturing Subcategory Sec. 426.50 Applicability; description of the float glass manufacturing subcategory. Source: 39 FR 5714, Feb. 14, 1974, unless otherwise noted. The provisions of this subpart are applicable to discharges of pollutants resulting from the process in which several mineral ingredients (sand, soda ash, limestone, dolomite, cullet, and other ingredients) are mixed, melted in a furnace, and floated on a molten tin bath to produce float glass.