Emergency services at the scene today. Photo: George Heard
Emergency services were called to the incident at a rural property on Pound Rd, Yaldhurst, at 11.30am on Thursday.
A Fire and Emergency NZ spokesman said a pipe being cut caused the explosion.
Two St John ambulances, a rapid response unit and a manager were called to the scene.
St John treated and transported one patient in a critical condition to Christchurch Hospital.
-By Devon Bolger
