gas monitoring, communications lines and ventilation bags. Once completed, the site is expected to be refurbished and handed back to the Department of Conservation. On 10 June 2020, Minister for Pike Mine Re-entry Andrew Little announced that it was "impractical" to expect the remains of the fallen miners to be recovered. Instead, recovery efforts would focus on gathering evidence for the homicide case. The cost of the recovery project had risen from NZ$23 million to NZ$35 million, with concerns that the figure could reach NZ$50 million. On 17 February 2021, the Pike River Recovery Agency abandoned plans to recover the bodies of fallen miners after reaching the roof fall 2.26 kilometers up the mine's access tunnel. The Agency would instead focus on conducting forensic work in the Pit Bottom in Stone area in support of the New Zealand Police investigation. On 23 March 2021, the Minister responsible for Pike River Re-entry, Andrew Little, stated that it was too hard and too expensive to go any further into the mine. On 12 May 2021, the Government confirmed that it was reviewing an NZ$8 million plan submitted by a group representing 23 Pike River families to recover the mine's ventilation fan, which is considered to be the most likely source of the 2010 explosion. On 4 June 2021, 22 of the 29 victims' families filed for a judicial review challenging Minister for Pike Mine Re-entry Little's rejection of a proposal to recover the mine's ventilation fan, which is considered the likely source of the 2010 explosion. Some of the families and supporters launched a social media campaign and an online petition, titled "Help stop critical evidence in Pike River mine from being locked away for ever!" The families also gained support internationally, including from mineworkers and experts in the UK and Australia. On 9 July, a group representing 20 Pike River families blocked the mine access road in order to prevent the Pike River Recovery Agency from permanently closing the mine. A representative of the Pike River families also sought a court injunction to prevent the Pike River mine from being permanently sealed. On 17 November 2021, New Zealand Police announced that the remains of at least two men had been found within the alpine bolter section of the mine. This discovery came following the recent drilling of boreholes and the introduction of specialised cameras into the mine. Police Superintendent Pete Read