The joke is:
...It mainly mines fluorite, an ore mainly used by the steel industry as a melting agent, and by the chemical industry in making hydrofluoric acid, but not one of the 17 rare earth elements. While it might contain traces of those elements, they hardly seem worthy of warranting the mark up in the miner's share price. This looks more of a case of investors piling into a stock that says "China" and "mining."...Similar to yesterday's ""Thompson Creek Won't Comment On Takeover Rumors, Says Stock Incorrectly Caught Up in Rare Earth Hype" (TC; MCP)"
I read somewhere that Johnny Carson's First Rule of Comedy was "Get the words in the right order". I suppose that would cover "Don't forget to include the punchline".