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31 Bronze An alloy made up mainly of copper and tin, but with zinc and lead often added.

32 This applies to, for example, gold, petroleum, copper, iron ore, lead, silver, nickel and zinc.

33 Copper, zinc, arsenic and tungsten are associated with tin in quartz-tourmaline veins.

34 Producing tin mine with co-product zinc and by-product copper and silver.

35 Interference can be avoided by the precipitation of zinc sulphide and filtration.

36 Figure 2, for instance, shows the breaking strains of whiskers of two very different substances, silicon and zinc oxide.

37 The 11 metals concerned include copper, zinc, lead, nickel, cadmium and mercury.

38 In October 1980 a spillage of dangerous lead and zinc waste into the Kilmastulla river led to some 20,000 householders in Co.

39 Princes Metal An alloy of copper and zinc, which after chemical treatment and burnishing, has a gilt-like appearance.

40 They also provide some zinc, helpful to the immune system for fighting infection, and a wide array of B vitamins.

41 Farmers claim that there are high levels of lead, zinc and cyanide in a man-made lake.

42 Each is protected by a layer of zinc, which drips on to the ground when it rains.

43 Subsequent analysis of a sample drilled from the interior showed it was of bronze with no zinc present at all.

44 Another doctor, 37 Edwin Schultz of Stanford, thought the compound zinc sulfate could do the job better.

45 The gaseous metal is put in a closed container and cooled so that it condenses into liquid zinc.

46 It seems to me that I wore glasses before I wore zinc and castor oil cream.

47 Any vulnerable parts should be treated with zinc oxide plaster(Sentencedict.com), so the skin hardens overnight.

48 The pipes are made of an alloy of copper and zinc.

49 Concentrations of two other heavy metal pollutants, cadmium and zinc, were more than halved during the same period.

50 The metals -- copper, silver and zinc -- accumulate with other pollutants in the bay bottom, harming aquatic life.

51 They returned six years later and purchased a corrugated zinc dwelling, and with their two sons became part-time islanders.

52 Dennis Blake, the area supervisor, wants to bring the zinc content much lower.

53 A major restriction in the cementation brass-making process was the limited amount of zinc which could be introduced into the alloy. Sentencedict.com

54 Give any large areas a squirt of zinc chromate primer but beware - it is very toxic and carcinogenic.

55 One disadvantage of copper pipe is that it can cause the loss of the zinc coating from galvanised pipes and water cisterns.

56 Zinc displaces the hydrogen of dilute acids.

57 Purify zinc is used to manufacture active zinc oxide.

58 A prepared zinc plate used in zincography.

59 The extinct exotic bird's feather contains zinc.

60 the fusion of copper and zinc to produce brass.