Exploration work here first began as early as 1882, resulting in the discovery of the copper rich Baltic Lode at the base of Six Mile Hill. In 1897 the Baltic Mine was formed to exploit these new found riches, becoming the southern range’s first successful mine outside of the Atlantic. The lode would end up supporting two other mines to the south, the Trimountain and the Champion.

The Baltic consists of five shafts, though the first (no.1) was abandoned early due to it being sunk at the wrong angle. The remaining shafts are numbered from southwest to northeast, starting at the No.2 and skipping the defunct No.1. In the beginning the mine formed a partnership with the neighboring Atlantic to the north, utilizing both its stamp mill an railroad for many years. The Baltic would finally build its own mill in 1902, and began utilizing the newly laid Copper Range Railroad to transport its rock.

In 1917 the Baltic was bought out by the Copper Range, who at that time owned almost every other copper related property in the southern range including the neighboring Trimountain and Champion mines. Unfortunately the arrival of the Depression and subsequent collapse of copper prices resulted in the company closing all its properties save the Champion just to stay alive. The Baltic would never be re-opened again.

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