He was involved in various industries including construction and engineering, mining, electric railroads, power development, finance, spinning, and newspapers, and established the foundations of many of today's prestigious companies.
建設・土木、鉱山、電鉄、電力開発、金融、紡績、新聞、などの経営を手がけ、今日の多くの名門企業の前身を築いた。