31. These oxides are removed with the dross while cleaning the surface of the molten metal. 32. Known in the production process as dross , the tin dioxide adheres to the glass. 33. At intervals the lead is remelted and the oxidized metal ( dross ) skimmed off. 34. Dross , as a solid, is distinguished from slag, which is a liquid.35. What are the constituents of Aluminium dross ? 36. After recording two singles for Joyce Records, Van Dross left The Crests in 1958. 37. When I print an email from Thunderbird, I get vast quantities of header dross . 38. Ultimately the dross overwhelmed the gold. 39. But nostalgia is a highly deceptive sieve that catches the gold and rigorously excludes the dross . 40. Producers can make gold of dross .