Table 1. Surveyed bank cubic yards (BCY) moved by draglines and [he
<br />number of buckets Con recorded prime swings) required to move
<br />the period 1919 through October 1981.
<br /> Recorded Surveyed
<br />Year Month Prime Swings Bank Cubic Yards
<br />1979 January 44,172 1,250,832
<br />February 56,698 1,261,524
<br />March 51,194 1,333,396
<br />April 67,382 1,692,639
<br />May 61,890 1,236,480
<br />June 64,795 1,493,719
<br />July 83,626 2,193,284
<br />August 70,377 2,286,117
<br />September 66,941 1,544,264
<br />October 83,445 1,702,153
<br />November 60,899 1,468,426
<br />December 66,912 1,568,019
<br />1980 January 82,519 2,187,745
<br />February 75,469 1,601,135
<br />March 66,158 1,385,136
<br />April 61,063 1,544,572
<br />May 50,734 1,142,6f1
<br />June 41,076 879,286
<br />July 59,259 1,485,396
<br />August 44,019 1,191,005
<br />September 42,271 1,119,565
<br />October 66,015 1,543,290
<br />November 40,177 927,748
<br />December 59,123 1,261,479
<br />1981 January 57,931 1,416,957
<br />February 61,684 1,532,155
<br />March 60,526 1,338,922
<br />April 77,681 1,682,971
<br />May 57,988 1,292,425
<br />June 55,895 1,288,625
<br />July 62,459 1,397,819
<br />August 54,388 1,381,797
<br />September 30,963 741,758
<br />October 47,027 1,132,197
<br />2,032,756 48,511,447
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