Monthly wages in mining, quarrying stone and gravel Japan 2019, by age group
As of June 2019, the contractual cash earnings in the Japanese mining and quarrying of stone and gravel industry was highest for the age group of 55 to 59 year olds, amounting to close to 425 thousand Japanese yen. Figures were lowest for the age group of 70 years and older, with only around 239 thousand yen.