Caterpillar’s (CAT) Resource Industries segment is the company’s lowest revenue contributor. The segment had a revenue share of 18% in the second quarter. The segment’s revenue share increased by 1.8 percentage points on a YoY (year-over-year) basis. The segment reported revenues of $2.52 billion in the second quarter, which implies an increase of 37.6% on a YoY basis. In the second quarter of 2017, the segment reported revenues of $1.83 billion.