Since most slaves in New Jersey worked on small farms that had about three bondsmen, they generally experienced a milder form of bondage than their counterparts in the South, Also, as in other northern colonies, more slaves in New Jersey were used in nonagricultural pursuits than in the South. They were, for example, employed in Charles Read’s ironworks in Burlington County, in copper mining on the Schuyler family lands in Bergen County, and in the skilled trades. Still, New Jersey was one of the few northern colonies where slave conspiracies occurred. Perhaps the most significant was discovered in Somerville in 1734; as a result of that discovery thirty blacks were apprehended, one hanged, several had ears cut off, and others whipped.