[1] The earliest roots of the Bethlehem mining operations began when the Jersey zone was staked and bonded to a French syndicate c. 1886 – c. 1887.

[2] Copper was known to occur in the Cascade Mountains near Princeton as the productive mines of Allenby in 1914 had shown.

In February 1960, Bethlehem Copper Corporation made an agreement with the Japanese group Sumitomo for US$5.5 million to bring the property into production.

[6] In April 2017 freezing pipes caused 850 cubic meters of process water to spill.

[7] Trojan Pond, a previous tailing pool used in the operation, began to be reclaimed in 1990[8] and is now a self-sustaining ecosystem and used for sport fishing.

[9] Copper and molybdenum mineral concentrates, which include trace amounts of silver and gold, are sent via truck to nearby rail facilities in Ashcroft where the ore is carried to the Port of Vancouver and to international destinations (primarily Japan and China for copper and steel production).