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Metal detectors are simple, effective, and inexpensive remote sensing tools with real value to archaeologists.
The negative association between metal detectors and urban students’ sense of safety is 13% less than what it is for students attending suburban or rural schools.
Time-activity data suggested NYC subways as a likely source of these elevated personal metals.
Results indicate the presence of a security guard and metal detectors is related to lower levels of formal parental involvement, all else equal.