Report of the Board of Shell Fish Commissioners. 13 
Average area of oyster bottom covered per ‘‘grab’’ with hand tongs: 
Depth of Water. Area Covered. 
1 to 5 feet. .79 sq. yd. 
e<* .66 td 
oleate 55 a 
ec 46 +s 14-foot shafts. 
9) 0.44 40 = 
Yi Aa i; 33) *} 
oe Ou ee 
5 8 9 40 ee 
ue ape 36 rs 
pn 33 
ld 30 ye 
lad .28 22-foot shafts. 
5 Aad | 20 o 
J 8 ee 9% ee 
19 ee ee 
90 cé 9 ee 
Area covered per ‘‘grab’’ with patented tongs...............:. 1 to 1.3 sq. yd. 
Number of ‘‘grabs’’ made per hour by tongmen (Average): 
Using Hand Tongs. Using Patented Tongs. 
Depth of Water. Number ‘* Grabs.’’ Depth of Water. Number ‘‘ Grabs.’’ 
5 feet. 162 18 to 30 feet. 50 
6u7%t 162 30 to 50 ** 40 
Zink 156 50 to 70 <5 33 
g fe 156 70 to 90‘ 26 
9 * 156 90 to 130 ** 23 
10? 156 
ST. 14 356 
Lay fs 144 
irs 132 
344% 132 
1§*\;*4 120 
16 « 108 : 
1th 108 
IBA 84 
se Arts 84 
20-68 84 
