Editing Placer mining (section)

===Rocker===
{{Main|Rocker box}}
A rocker box (or "cradle") is capable of greater volume than a gold pan; however, its production is still limited when compared to other methods of placer mining. It is only capable of processing about 3 or 4 yards of gravel a day.<ref name=":0" /> It is more portable and requires less infrastructure than a sluice box, being fed not by a sluice but by hand. The box sits on rockers, which when rocked separates out the gold, and the practice was referred to as "rocking the golden baby". A typical rocker box is approximately 42 inches long, 16 inches wide and 12 inches deep with a removable tray towards the top, where gold is captured.<ref>Basque, G. (1999). Methods of placer mining. Surrey, B.C: Heritage House. p. 41</ref> The rocker was commonly used throughout North America during the early gold rush, but its popularity diminished as other methods that could handle a larger volume became more common.<ref name=":0" /> <!--maybe used in California, I'm not sure-->