This has impacted the demand for mining equipment and machinery manufactured by Caterpillar and other mining equipment manufacturers, causing them to lower their earnings forecast over the short-term.

FORBES: Caterpillar Is Worth $95 On Long Term Fundamentals

Long lead times persist for oil drilling rigs, mining equipment and some other specialized machinery, but generally companies face no supply limitations when considering expansion.

FORBES: Economic Forecast Update, 2013-2014: Light-to-moderate Growth

And the other has to do with two of our largest mining equipment manufacturing facilities located in Illinois.

WHITEHOUSE: Briefing by Deputy Press Secretary Josh Earnest