STREAM TIN ON BUCK CREEK. 
33 
July, sluicing for tin ore was in progress at only one place. The 
creek valley still contained great drifts of snow, and mining opera- 
tions generally were retarded by the lateness of the season. 
Stream tin is harder to separate from the gravel than is gold on 
account of its lower specific gravit}^ but the methods employed in 
washing it out were modifications of somewhat primitive processes of 
gold placer mining. Ten men were shoveling into the one " string" 
V--22--M 
DOVE BOX 
l_l ±. 
STRING OF 
SLUICE BOXES 
_L 
22 1 
SLUICE BOX 
Fig. 4. — Sluice boxes used in washing placer tin in York region. 
of sluice boxes and a clean up was made four times a day, so that the 
work was frequently interrupted. The sluice boxes used were 16 
feet long, 24 inches wide at the upper end and 22 inches wide at 
the lower end, and 7 boxes were used in a "string," making a total 
length of 150 feet. A "dove box" 8 feet long, 4 feet wide at the 
upper end and 22 inches wide at the lower end, with riffles, was 
Bull. 229—04 3 
