---
title: "Pittsburgh Reduction Company"
type: "entity"
entity_kind: "concept"
status: "hub"
canonical_name: "Pittsburgh Reduction Company"
aliases: ["Alcoa (successor name)"]
first_seen: "2026-07-23T00:00:00.000Z"
writer_model: "claude-sonnet-5"
connects_to: ["Hall-Héroult process","aluminium price history","Joseph W. Richards","Alcoa (successor)"]
---


The Hall-process electrolytic aluminium producer founded in Pittsburgh in 1888 (later renamed Alcoa) that Joseph W. Richards' 1896 price table implicitly names as the single market behind five consecutive rows — 1889 through 1894 — of the vault's most-scrutinized aluminium-price sequence. It matters here specifically because it is the commercial identity the ditto marks in Richards' own table stand in for: not a generic "market price" but one producer's own falling price, in one city, across the exact years Hanners' popular figures are drawn from.

## References
- [[claim-richards-1896-table-attributes-1889-1894-to-single-pittsburgh-series]]
- [[claim-richards-1896-statistics-table-confirms-hanners-price-figures]]