Exhibit 22.1

List of Guarantor Subsidiaries

Freeport-McMoRan Oil & Gas LLC (FM O&G LLC), a Delaware limited liability company, is a 100-percent-owned subsidiary of FCX Oil & Gas LLC and indirect subsidiary of Freeport-McMoRan Inc. (FCX), and guarantor of all of FCX’s senior notes.

Freeport Minerals Corporation (FMC), a Delaware corporation, is a 100-percent-owned subsidiary of FCX and an issuer of senior notes and debentures that are guaranteed by FCX.

The following is as of December 31, 2020:

Senior notes issued by FCX and guaranteed by FM O&G LLC:

•3.55% Senior Notes due 2022

•3.875% Senior Notes due 2023

•4.55% Senior Notes due 2024

•5.00% Senior Notes due 2027

•4.125% Senior Notes due 2028

•4.375% Senior Notes due 2028

•5.25% Senior Notes due 2029

•4.25% Senior Notes due 2030

•4.625% Senior Notes due 2030

•5.40% Senior Notes due 2034

•5.45% Senior Notes due 2043

Senior notes and debentures issued by FMC and guaranteed by FCX:

•71/8% Debentures due 2027

•9½% Senior Notes due 2031

•61/8% Senior Notes due 2034