Costs are paid per ton. Revenue is paid per ounce. Grade is the conversion rate between the two worlds.
If mining were a language, grade is the word that means five different things depending on who you ask. To an investor, it’s “how rich.” To an operator, it’s “how many tons do I have to move to get paid.”
Most costs—drill, blast, load, haul, crush, process—scale with tons. So grade is leverage. Higher grade often means you can make the same system produce more ounces without expanding everything.
That’s why many U.S. open-pit heap leach profiles operate around sub-1 g/t grades (with tight cost controls and huge tonnage engineering). Public examples include reserves/resources around ~0.5–1.25 g/t in various disclosures.
Dilution—how grade gets “stolen” in real life
Dilution is when waste rock gets mixed into ore during mining. It’s unavoidable to some extent because geology isn’t made of clean Lego blocks. Small changes in blast movement, shovel selectivity, and bench control can dilute grade. High-grade systems often have more margin buffer against dilution—but they also demand better ore control discipline.
Telegraph’s published history includes unusually high grades: historic underground about 0.93 oz/ton (~29 g/t) and historic open pit about 0.21 oz/ton (~6.5 g/t). Telegraph’s planned Phase 0 is a selective high-grade pilot—because grade plus early reconciliation is the fastest path to “commercial truth.”