After resigning from government office in 1869, he established an assay office for gold and silver, and started a new life as a businessman, engaging in mine management, spinning, manufacturing of indigo and other businesses.
明治2年（1869年）の退官後、金銀分析所などを設立し、鉱山経営、紡績、製藍業などをはじめ実業家として道を歩む。