Affiliated Business

Engineering Business

Mitsubishi Materials Techno Corporation is a comprehensive engineering company with core businesses in engineering, maintenance, industrial machinery and equipment, and resource and environmental consulting. The company provides onestop technologies and services supporting industrial infrastructure, ranging from design and construction to equipment fabrication, maintenance and repair, soil and groundwater investigation and analysis, and environmental countermeasures.


Its strength lies in its total engineering capabilities, which enable integrated support from plant construction through operation and maintenance for a wide range of industries, including metals, semiconductors, chemicals, food, and pharmaceuticals, as well as the renewable energy field, such as geothermal utilization systems.

Sightseeing Mine Tunnel Business

Since its founding, Mitsubishi Materials Corporation has contributed to Japan's industrial development by developing and operating mines throughout the country. Mine tunnels that have completed their original roles continue to retain high value as industrial heritage, even after the passage of time. We have opened these former mine sites to the public as sightseeing mine tunnels, preserving mining history, technologies, and regional culture for future generations.

Sightseeing mine tunnels open to the public at sites such as the Sado Gold Mine, Osarizawa Mine, and the Ikuno area are popular educational destinations where visitors can experience history by walking through actual tunnel spaces. By preserving industrial heritage while enhancing local tourism, we deliver new discoveries and inspiration to visitors and will continue our activities that connect society through tourism while contributing to cultural preservation and regional revitalization.

Engineering Business

By leveraging comprehensive capabilities in engineering, maintenance, industrial machinery, and resource and environmental technologies, the company aims to support industry while contributing to the reduction of environmental impact and the realization of a recycling-oriented society.

Under the slogan "We have technology to support clients' technology," the company supports future manufacturing with reliable technology and quality and continuously provides value to society and local communities.