update on pen coming, page-5

I got following definition of FCF,
Why is this stock plungging if FCF is 20m just from one mine. Thatis almost 50% of MC.
Does anyone know something??????

Definition of 'Free Cash Flow - FCF'
A measure of financial performance calculated as operating cash flow minus capital expenditures. Free cash flow (FCF) represents the cash that a company is able to generate after laying out the money required to maintain or expand its asset base. Free cash flow is important because it allows a company to pursue opportunities that enhance shareholder value. Without cash, it's tough to develop new products, make acquisitions, pay dividends and reduce debt. FCF is calculated as:

EBIT(1-Tax Rate) + Depreciation & Amortization - Change in Net Working Capital - Capital Expenditure

It can also be calculated by taking operating cash flow and subtracting capital expenditures.