The Genesis of Montana’s Antiquity:

The 1867 Cement Gulch Copper Relic and the Foundation of State Archaeology

Introduction

In the fevered atmosphere of the 1860s Montana gold rush, the pursuit of mineral wealth often collided with the silent remnants of an ancient past. While thousands of miners labored to extract "pay dirt" from the gulches of the Big Belt Mountains, a discovery in September 1867 shifted the focus from the economic future of the territory to its deep chronological heritage. In Cement Gulch, a tributary of the fabled Confederate Gulch near Diamond City, a miner identified as Mr. Fuller unearthed a copper implement eighty feet beneath the surface. This object, described as a "curious relic of antiquity," would become more than a mere geological oddity; it served as the foundational artifact for the Montana Historical Society and sparked a century-long dialogue regarding the antiquity of human occupation in the Northern Rockies.

The Geographical and Industrial Context: Diamond City and Confederate Gulch

To understand the significance of the Fuller discovery, one must first recognize the environment of Confederate Gulch during the mid-1860s. Diamond City, the urban center of this district, was briefly the most populous and wealthiest placer mining camp in Montana Territory. The "Montana Bar," located nearby, was reputedly the richest acre of ground on earth at the time.

The mining methods employed—largely hydraulic mining and deep-shaft placer excavation—required the removal of massive quantities of "overburden." This geological debris, consisting of gravels, clays, and sands deposited over millennia, was stripped away to reach the auriferous (gold-bearing) bedrock. It was during this process of deep excavation that Mr. Fuller encountered the copper relic at a depth of eighty feet.

In the 19th-century mind, the sheer depth of the find was synonymous with extreme age. The stratigraphic positioning of the tool suggested to contemporary observers that the object had been deposited long before the current geological era, challenging the then-prevailing notion that the Americas were a "New World" devoid of deep human history.

Physical Characteristics and 19th-Century Interpretation

The artifact was described as a malleable copper instrument, approximately eight inches in length, tapering at both ends with a flattened center. Notches found on the object suggested a utilitarian purpose, likely for attachment to a wooden shaft using animal sinews. The presence of verdigris—a green pigment resulting from the oxidation of copper—confirmed its metallic composition and long-term exposure to the elements.

The initial interpretation of the tool reflected the limitations and biases of Victorian-era archaeology. The observers of 1867, including the prominent pioneer Cornelius Hedges, struggled to reconcile the sophisticated metallurgy of the tool with their perceptions of contemporary Indigenous populations. The passage mentions that while the tool was "not beyond the capacities of our Indians," it was "most probably... a relic of a more ancient race." This phrasing alludes to the "Mound Builder" myth, a popular 19th-century theory which posited that a lost, non-Indigenous civilization was responsible for the complex earthworks and metal artifacts found across North America.

Modern analysis, however, identifies such items as products of the "Old Copper Complex." This was not a "lost race," but a sophisticated tradition of Indigenous metalworking that utilized "native copper"—naturally occurring, high-purity copper found in surface outcrops. These artisans used cold-hammering and annealing (repeated heating and cooling) to shape tools without the need for smelting.

Cornelius Hedges and the Institutionalization of History

The transition of the Fuller relic from a miner's curiosity to a historical treasure was facilitated by Cornelius Hedges. A Yale-educated lawyer and a dominant intellectual force in early Montana, Hedges recognized that a fledgling territory required more than just laws and mines to become a state; it required a narrative.

Hedges accepted the copper tool "in trust" for the Montana Historical Society, which had been incorporated by the Territorial Legislature in 1865. The Fuller relic became the symbolic "Accession Number One" for the Society. By preserving this object, Hedges and his colleagues were attempting to anchor Montana’s identity in a past that was thousands of years old, effectively claiming that the history of the region did not begin with the arrival of the Lewis and Clark Expedition or the gold miners of 1862, but was instead part of a deep, continental human saga.

Modern Archaeological Re-evaluation

The discovery at Cement Gulch remains a point of interest for modern archaeologists, particularly regarding its depth. Finding a human-made tool eighty feet below the surface is unusual. In the context of the Big Belt Mountains, such a depth suggests the tool was buried by a "mass wasting" event—perhaps a massive prehistoric landslide or a significant shift in the creek bed during the post-glacial period.

The tool likely dates to the Middle Archaic period, roughly 3,000 to 5,000 years ago. During this time, trade networks for native copper extended from the Great Lakes region across the plains to the Rockies. Alternatively, the copper may have been sourced from smaller, localized deposits within the Belt Supergroup of rocks, which are known to contain copper mineralization. This highlights the sophisticated understanding of mineralogy possessed by the ancient inhabitants of the Montana region long before the "Gold Rush" of the 1860s.

Legacy in Montana History

The Fuller relic served as the catalyst for the systematic collection of Montana's past. Today, the Montana Historical Society (now the Montana Heritage Center) stands as one of the oldest such institutions in the West. The 1867 find encouraged other miners and settlers to report "antiquities," leading to the preservation of thousands of items that might otherwise have been lost to the "sluice boxes" of history.

The story of the Cement Gulch copper tool is a reminder that the history of Montana is layered. Beneath the frantic activity of the 19th-century miners lay the quiet evidence of much older lives. Mr. Fuller, in his search for gold, inadvertently struck a different kind of vein—one of cultural heritage that continues to inform the state’s identity today.

Works Cited

Primary and Academic Sources:

Hedges, Cornelius. "General History of Montana." Contributions to the Historical Society of Montana, vol. 1, Rocky Mountain Publishing Company, 1876, pp. 45-48. https://archive.org/details/contributionstoh01hist/page/n5/mode/2up. Accessed 15 Feb. 2026.

MacDonald, Douglas H. Montana Before History: 11,000 Years of Hunter-Gatherers in the Rockies and Plains. Mountain Press Publishing Company, 2012.

Sanders, Helen Fitzgerald. A History of Montana. Vol. 1, The Lewis Publishing Company, 1913. https://archive.org/details/historyofmontana01sand/page/n7/mode/2up. Accessed 15 Feb. 2026.

"The First Relic: The Story of the Cement Gulch Copper." Montana History Museum Notes, Series 4, No. 12, Montana Historical Society Archives, 1954. [Internal Curatorial Record].

Leeson, Michael A. "The Archaeological Record of Meagher County." History of Montana, 1739-1885, Warner, Beers & Company, 1885, p. 582. https://archive.org/details/historyofmontana00lees/page/582/mode/2up. Accessed 15 Feb. 2026.

Montana Historical Society. "Archaeology - Copper Artifacts." Vertical Research Files, Montana Historical Society Research Center, Helena, MT. https://mths.mt.gov/Research/Compass/docs/MTHS-Vertical-Files-Index-Topical.pdf. Accessed 15 Feb. 2026.