The Cypress Mine is a proposed extension to the open cast coal mine the Stockton Mine’s operational area, to the east into the Upper Waimangaroa Mining Permit area, on the West Coast of New Zealand.
Save Happy Valley Coalition (SHVC), an environmental organisation, opposed the mine and occupied land adjacent to the proposed mine site for two years. SHVC say that the mine will cause acid mine drainage, destruction of habitat of endangered species and result in 12 to 14 million tonnes of CO2 emissions, contributing to climate change.
Solid Energy's Environmental Report 2007 stated that the mine is planned to start in 2008. Solid Energy has stated that the mine will be developed in 2010 and that the first coal is expected to be taken in late 2011.
In October 2012 Solid Energy announced that work on the mine would be delayed.
On 12 June 2013, The Biodiversity Defence Society filed proceedings with the Environment Court, arguing that Solid Energy no longer holds resource consents for its Cypress Mine, due to the expiry of the allocated time period of the consent. 
- "Stockton Mine Cypress Extension". Solid Energy New Zealand Ltd. Archived from the original on 8 July 2011. Retrieved 28 August 2010.
- "Solid Energy welcomes consent green light for Cypress coal mine". Crown Minerals, Ministry of Economic Development. 2005-06-03. Retrieved 2010-09-18.
- Solid Energy - Environment Report 2007 Archived 20 September 2008 at the Wayback Machine.
- Stephenson, Keira (2 October 2012). "More job losses at Stockton". The New Zealand Herald, Westport News. Retrieved 2 October 2012.
- "Mining consent expired for Happy Valley". Scoop. 12 June 2013. Retrieved 12 June 2013.