The Environmental Health Offices testing in the Christchurch central city, photographed outside the damaged Stonehurst Backpackers.
Aerial image of Lyttelton taken by the Royal New Zealand Air Force for the Earthquake Commission.
Aerial image of Christchurch taken by the Royal New Zealand Air Force for the Earthquake Commission.
Members of the New Zealand Police and Army at the Operation Earthquake Task Force Headquarters.
A photograph of emergency management personnel eating lunch in the temporary canteen set up in Latimer Square.
A photograph of emergency management personnel eating lunch in the temporary canteen set up in Latimer Square.
Aerial image of Christchurch taken by the Royal New Zealand Air Force for the Earthquake Commission.
Aerial image of Sumner taken by the Royal New Zealand Air Force for the Earthquake Commission.
A photograph of USAR codes spray-painted on the front doors of several businesses on Armagh Street.
A photograph of members of Urban Search and Rescue teams eating lunch in Latimer Square.
A photograph of road works on St Asaph Street near the Canterbury Brewery.
Aerial image of Sumner taken by the Royal New Zealand Air Force for the Earthquake Commission.
On the eve of the memorial service for the Christchurch earthquake, the Labour party is laying into the Government's handling of the city's ditching as a Rugby World Cup venue.
Private Alex Crivellaro from the Auckland Territorial Unit clearing silt from a resident's garden in east Christchurch.
Aerial image of Lyttelton taken by the Royal New Zealand Air Force for the Earthquake Commission.
Aerial image of Lyttelton taken by the Royal New Zealand Air Force for the Earthquake Commission.
Aerial image of Lyttelton taken by the Royal New Zealand Air Force for the Earthquake Commission.
Aerial image of Cathedral Square taken by the Royal New Zealand Air Force for the Earthquake Commission.
Aerial image of the Port Hills taken by the Royal New Zealand Air Force for the Earthquake Commission.
Aerial image of the Port Hills taken by the Royal New Zealand Air Force for the Earthquake Commission.
Broken stonework lies on the footpath next to the former Lyttelton Fire Station.
Members of the New Zealand Fire Service spraying water into Lyttelton Harbour as the HMNZS Otago departs.
A soldier from the New Zealand Army guarding a cordon in the central city.
An aerial view of Christchurch a week after the 22 February 2011 earthquake.
Aerial image of the Port Hills taken by the Royal New Zealand Air Force for the Earthquake Commission.
An aerial view of Lyttelton a week after the 22 February 2011 earthquake.
A camera operator filming Prime Minister John Key's briefing following the 22 February earthquake.
Members of the Auckland and Northland Territorial Units clearing bricks from a resident's garden in east Christchurch.
Two members of the Auckland and Northland Territorial Units clearing silt from a house in east Christchurch.
Aerial image of Latimer Square taken by the Royal New Zealand Air Force for the Earthquake Commission.