Cookie NoticePlaying the video will connect to external servers which use cookies and other tracking technologies to personalize and improve experience.Further information can be found in our privacy policy.Allow cookies and play video Source: YouTubeTristar Resources 11.03.2014 - 17:49 10:31 MIN 3.059 SHAREInterview with Brian Spratley, Technical DirectorInterview with Brian Spratley, Technical Director Embed Embed-Code×Video-ID: 1158