Some properties in Christchurch are at increased risk of liquefaction happening as a consequence of the earthquakes. Mike Jacka from Tonkin and Taylor talks about identifying such land and how properties were assessed for this type of land damage at a series of seminars run by In the Know Land Hub. The seminar at Beulah Church is being held on October 14 from 6-7pm and repeated on October 15 from 11 am- 12 noon.