With sales and operations at the ends of the earth, few companies are in a better position to take the pulse of the global economy and the resource sector in particular than Caterpillar.

The world's number one heavy equipment manufacturer has been hit hard by the decline in mining and construction –sales are down more than $20 billion from its peak just four years ago after a drop of over $8 billion last year.

Things are still getting worse in 2016, but at least the rate of decline is slowing. Caterpillar's latest sales figures released today show an improvement in all markets.

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