Reserves & ReplacementThin moat

Here is the economic curse at the centre of mining, the one that most sharply separates it from a moat business: a mine is a wasting asset. Every ounce of gold Barrick sells is an ounce that no longer exists in its reserves, and unless it is replaced by finding or buying another, the company has simply shrunk; at the current pace that is over three million ounces to replace every year¹. Where a great consumer or software business compounds — this year's sales leave next year's capacity intact and often larger — a miner must run hard on a treadmill merely to stay the same size, and run harder still to grow.

Reserves are the stock of gold a company has proven it can economically mine, and reserve replacement — the ratio of ounces added to ounces depleted each year — is the single truest measure of whether a miner is building value or quietly liquidating. A company that consistently replaces less than it mines is melting like an ice cube, however healthy its current profits look. Much of the gold industry has, in fact, struggled to fully replace reserves for years, as the great new deposits have grown scarce and grades have fallen.

Barrick replaces reserves in two ways, and both are hard. It explores — drilling around its existing mines and across its ground, hoping to convert geology into economic ounces, as it has with the high-grade Fourmile discovery in Nevada. And it acquires — buying reserves that other companies found, as the old Barrick did aggressively and often badly. Neither is a moat. Exploration is expensive, slow, and mostly unsuccessful; acquisition usually means paying a full price for someone else's ounces, which transfers the value to the seller.

This is why reserve replacement belongs at the heart of any honest look at Barrick, and why it is rated thin. The treadmill never stops. A miner that is coasting on a great current profit while its reserve life quietly erodes is a very different thing from a business whose advantages deepen on their own. Barrick can manage the treadmill well — better than most — but it cannot step off it, and the constant, capital-hungry effort to replace what it consumes is the antithesis of a moat.