A little explanation might be helpful.
Companies buy construction equipment (Caterpillar) when they expect things to be growing and expanding.
The same with the price of copper...copper is called 'Dr Copper' because of its accuracy in predicting economic growth...when the price of copper is rising, things are growing.
With the price of both these items on a downward trend...don't be expecting a robust/growing economy.
supposedly CAT steers the market? We will see.