I wrote on the fascinating topic of mine reconciliation for North American Mining magazine's July/August issue. Key takeaway: mine reconciliation is hugely important, not well understood, and challenging to get right. As Maptek's Peter Johnson concluded, mines that "close before the planned end of life have usually failed at some point to reconcile." Thanks to Peter, Rayleen Hargreaves of Datamine, Rudy Moctezuma of Eclipse Mining Technologies, Nathan Flesher, Patrick McCann, and Karilyn Farmer of McKinsey & Company, and Craig Morley and Ian Glacken of Snowden Optiro for sharing their knowledge and experience.