Example diagram of an open pit mine with an idealized step-pyramid mine boundary. Illustration by editor and illustrator Zongjun Li (李宗隽). Editorial Conversation: Chapter 6, Section 2: Developmental History of Yixing Mining - Intro Jason M Cohen 11 Apr 2023 Share on Twitter Share on Facebook Share on LinkedIn Share on Pinterest Share via Email Copy link The show is also available on YouTube and Spotify. Podcast Jason M Cohen Master of Ceremonies here on Tea Technique. Elsewhere, Founder & former CEO of Analytical Flavor Systems. Previously, Founder and Executive Director of the Tea Institute at Penn State (defunct). Comments