Study Accuracies, page-13

So now we have a Concept Study leading to a Scoping Study. WTF. What is the accuracy of the CS??

Mine development commitment activities for a potential project are initiated when a mineral resource is identified and continue through to the start of construction. The technical feasibility and the economic viability of each project are determined during the phases of mine development with more detailed engineering data required at each stage. There are at least four levels of engineering studies during development that are commonly acknowledged by the mining industry: 1. Conceptual Study 2. Preliminary Economic Assessment (PEA), or Scoping study 3. Pre-feasibility (PFS) 4. Feasibility (FS) Some other commonly used study names include:  Definitive Feasibility Study (DFS)  Bankable Feasibility Study (BFS)  Front End Engineering Design (FEED)  Stage Gates Studies  Front End Loading (FEL) Studies  Basic Engineering  Detailed Engineering