Mining Journal has been following the Marimaca story for some time and, on paper, it looks like a world-class opportunity for leverage on a commodity that is at the top of the shopping list for all competent resources investors. But as anyone who is familiar with the mining sector will tell you, nothing in this industry is as it appears on paper. So, when Mining Journal was invited to site to kick the rocks and ask Marimaca's decision makers the important questions – finance, permits, capex, opex and infrastructure – we grabbed it with both hands. What we saw was remarkable.