Abstract: The invention provides a process for removing cyanide from a cyanide-bearing aqueous fluid, the process comprising: (i) adding a solid composition comprising a first mixed-metal cyanide complex comprising copper and iron to a cyanide-bearing aqueous fluid comprising free cyanide and metal-complexed cyanide, wherein at least a portion of the first mixed-metal cyanide complex dissolves, with complexation of the copper by the free cyanide, to produce an aqueous solution comprising cyanometallates, the cyanometallates comprising copper cyanide and iron cyanide complexes derived from the first mixed-metal cyanide complex; (ii) contacting the aqueous solution with an anion-exchange absorbent to absorb the cyanometallates, thereby producing a cyanide-lean aqueous fluid; (iii) extracting the anion-exchange absorbent comprising the absorbed cyanometallates with at least one non-acidic aqueous extractant to produce an aqueous extract comprising the copper cyanide and iron cyanide complexes; and (iv) acidifying the aque

Abstract: An improved railing connection and method of manufacture and assembly for use in assembling railings. A railing connection fastener is secured to one railing member and is concealed within the proximal end of a second railing member. The proximal end of the second railing member is shaped to fit the shutting profile of the first railing member, thereby resisting rotational movement around the proximal-distal axis of the second railing member. The railing connection fastener is secured to the second railing member, thereby resisting movement along the proximal-distal axis of the second railing member. The contour of the proximal end of the second railing member is shaped to fit the profile of the first railing member. The use of the connection fastener and the contour of the proximal end of the second railing member create a smooth, continuous joint with limited complex manufacture.