Dozens formed a `` human chain '' to keep heavy machinery from moving at pipeline site . Three protesters suspended themselves from 50-foot pine trees to stop pipeline work . Score: 6 Company building the pipeline did not immediately respond to CNN calls .
Dozens formed a `` human chain '' to keep heavy machinery from moving at pipeline site . Three protesters suspended themselves from 50-foot pine trees to stop pipeline work . Deputies used pepper spray to remove protesters , group says . Company building the pipeline did not immediately respond to CNN calls .