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Table 2. (Concluded) <br />Chemical group and Amount, in <br />other variables metric tons Referencea <br />1976, Total 155,000 1 <br />Tinplate 52,700 1 <br />Solder 48,100 1 <br />Chemicals 20,000 1 <br />Other uses 34,200 1 <br />1976, Total 225,000 4 <br />Ores 157,500 4 <br />Scrap metal 67,500 4 <br />aReferences: 1, Blunden et al. 1985; 2, Blunden and Chapman 1986; 3, Zuckerman <br />et al. 1978; 4, WHO 1980; 5, Chau et al. 1984; 6, Guard et al. 1981; 7, <br />Laughlin et al. 1986a; 8, Walsh et al. 1985; 9, Davies and Smith 1982; 10, CEC <br />1978. <br />14