Founding Furukawa Electric — from Ashio copper to a Yokohama wire mill (1896)
What the mining king’s vertical integration left behind
What this founding shows is a decision of vertical integration — capital earned in mining turned toward downstream processing. To secure a reliable outlet for the electrolytic copper of the Ashio mine, its own resource, Furukawa Ichibei took a fabricating operation, cable manufacture, inside the group. In choosing not the glamour of finished goods but the wire that carries electricity — the foundation of an industry — one can read the calculation of a businessman taking a step beyond mining. The posture of binding extraction, smelting and fabrication into a single chain prepared the path to the non-ferrous metals maker that came later.
The other thing that comes into view is the double aspect of Ashio, the group’s core asset and at the same time the source of severe pollution. While the earnings of Japan’s largest copper mine underwrote the move into cable, the poisoning of the Watarase river basin left the Furukawa family with decades of compensation and remediation. That the expansion of the business and its social cost came out of the same mine reflects the contradiction built into modern Japan’s resource development. The mining king’s vertical integration handed on to the Furukawa that followed both a new business in cable and a heavy burden.
Read the full dossier in Japanese →
The Japanese edition carries the complete record of this decision — the situation that forced it, the options weighed, what actually followed, and the sources behind every claim.
Other key decisions at Furukawa Electric
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Data API
Furukawa Electric’s history, financials, executives and
shareholders are published as static JSON — no key, plain GET.
Full specification →
| Method | Endpoint | Returns |
|---|---|---|
| GET | /api/companies.json | All companies |
| GET | /api/5801/manifest.json | Resource index |
| GET | /api/5801/history.json | History overview |
| GET | /api/5801/timeline.json | Chronology |
| GET | /api/decisions.json | All management decisions (index) |
| GET | /api/5801/decisions.json | Management decisions (index) |
| GET | /api/5801/decisions/{slug}.json | One decision (full dossier) |
| GET | /api/5801/executives.json | Executives |
| GET | /api/5801/shareholders.json | Major shareholders |
| GET | /api/5801/financials.json | Financial statements |
| GET | /api/5801/financials-longterm.json | Long-term results |
| GET | /api/5801/segments.json | Business segments |
| GET | /api/5801/regions.json | Sales by region |
| GET | /api/5801/workforce.json | Workforce |