Molycorp (MCP +13%) is among today's top gainers on news that its California facility had begun...

|By:, SA News Editor

Molycorp (MCP +13%) is among today's top gainers on news that its California facility had begun to produce heavy rare-earth concentrate from freshly mined ore and is on track to achieve full Phase 1 production rates in Q4. But Paul Ausick reminds that by next year, the supply of rare earths will more than double the amount now on the market, and some companies are developing substitutes.