Farm help Published July 20, 2014 at 4194 × 2397 in Christchurch and the Earthquakes ← Previous Next → liquefaction Farmers from Waiau in North Canterbury make a difference for residents in Birch Street, Bexley, who have been badly affected by liqufactionfollowing the 6.3 magnitude earthquake, Christchurch, Sunday, February 27, 2011. Credit:NZPA / David Wethey