There are deposits of coal around Mursko Središće, Peklenica and Lopatinec. Lopatinec got its name from "lopata", the Croatian word for "shovel". Coal mining was part of the local economy between 1946 and 1972, but has eventually become unprofitable. The total output at that time was close to 4,600,000 tonnes. Estimated reserves are 200,000,000 tonnes, although new technologies and approaches would be needed to extract it profitably. The village of Križovec might be the only place in the world where people extract coal by pulling it by hand from the bottom of the river.