Official Government Website

Gilmore Townsite and Surrounding Lands

Large-scale hard rock mining and milling operations took place near Gilmore until the 1950s and left behind contaminated waste in the form of tailings, waste rock, and processed ore. Over time, human activities, wind, and water have distributed contaminated soil across the townsite. Lead and arsenic do not break down over time and will remain in soil unless removed. Sampling conducted by the Department of Environmental Quality (DEQ) confirmed lead in soil at levels 50+ times higher than considered safe near a residence. Elevated levels of arsenic were also found in soil in some townsite locations.

High levels of lead and arsenic are present in soil and dust at and near the Gilmore townsite and can be very harmful to your health.

DEQ will update this website with more information regarding the metals contamination at the Gilmore townsite and surrounding lands as it becomes available.

Community Survey

During March and April 2023, DEQ conducted a survey of Gilmore landowners and site users. A questionnaire was mailed to the roughly 100 people who own land within or surrounding the Gilmore townsite. Other members of the public were also invited to participate. Review a summary of the Gilmore community survey.

The voluntary survey gathered information about metals contamination in soils in historic towns and surrounding lands. Responses will help DEQ and partnering agencies understand the communities’ interests and concerns about lead and arsenic health risks, current and future land uses, and potential cleanup activities.

Upcoming Events

Reduce Exposure

Lead, arsenic, and other metals can enter your body by breathing in (inhaling) or swallowing (ingesting) contaminated dust or soil. Exposure to lead, arsenic, and other metals will be difficult to avoid at and near the Gilmore townsite, especially during activities such as playing, eating, working, and riding bikes or ATVs.  Children, pregnant women, and women of childbearing age are most at risk and need to avoid exposure. See the next page for ways to reduce exposure.

Limiting the amount of time in the area or avoiding intense exposure can reduce but not eliminate exposure. Learn more about reducing exposure at the Gilmore Townsite.

Health Concerns

Lead is toxic. It can be harmful to anyone, but it is most dangerous for young children, pregnant women, and women of childbearing age. Lead exposure can negatively affect a child’s brain development, and its effects may be permanent. In adults, elevated exposure to lead can damage the body’s internal organs or increase blood pressure. Lead poisoning can occur with no obvious symptoms. There is no safe blood level of lead – notify your family’s health care provider of lead exposure from soil and dust at Gilmore. Arsenic is a known human carcinogen, and long-term exposure can increase cancer risk. Arsenic can harm people of all ages.


Site NameCountyYear
U.S. Department of Health and Human Services Health ConsultationLemhi2023
Expanded Site Inspection Report for Gilmore Townsite and Surrounding LandsLemhi2022
Gilmore Townsite Common Use Areas and Surrounding LandsLemhi2017
Gilmore Division of the Texas Mining DistrictLemhi2016
Gilmore Division of the Texas Mining District (aka Pittsburgh Idaho Mine, Pittsburgh Idaho Group, P.I. Mine, Never Sweat Mine, Silver Dollar Mine, Latest Out Mine; aka Hatton, Edie, Glen Tunnel, Silver Dollar Extension, W.H. Cannon, Gilmore, Andy, Martha, Dorothy, Ruth, La Porte, G.A.P, Olive, Vick, Texas, Sixteen-to-One (16 to 1), Mixer, Cook, Annex, Roy Launder, Ernest, Elk, and Elk No. 2 patented claims)Lemhi2011
Andy Patented Claim (aka Allie Group, Allie Mining Co. Claims, “Old” Gilmore Town Site, Andy Tunnel)Lemhi2010
Edie Patented Claim (aka Allie Group, Allie Mining Co. Claims)Lemhi2010
G.A.P. Patented Claim (aka Gilmore Mercantile Co. Claims, Martha Group, Dorothy Group)Lemhi2010
Gilmore Patented Claim (aka Allie Group, Allie Mining Co. Claims, Gilmore Mine, Gilmore Decline, Gilmore Tunnel)Lemhi2010
Glen Tunnel (aka Allie Group, Allie Mining Co. Claims, Glen Patent)Lemhi2010
Hatton Patented Claim (aka Allie Group, Allie Mining Co. Claims)Lemhi2010
La Porte Patented Claim (aka Gilmore Mercantile Co. Claims, Martha Group, Dorothy Group)Lemhi2010
Latest Out Mine (aka Pittsburgh-Idaho Group, Allie Group, Latest Out Patent, Latest Out Tunnel, Latest Out Shaft)Lemhi2010
Never Sweat Mine (aka Pittsburgh Idaho Mine, Never Sweat Shaft, Pittsburgh-Idaho Group)Lemhi2010
Silver Dollar Extension Patented Claim (aka Pittsburgh-Idaho Group)Lemhi2010
Sixteen-to-One (16 to 1) Patented Claim (aka Pittsburgh-Idaho Group)Lemhi2010
Texas Patented Claim (aka Pittsburgh-Idaho Group)Lemhi2010
W.H. Cannon Patented Claim (aka Allie Group, Allie Mining Co. Claims)Lemhi2010

This accordion will not appear on the screen

Regional Administrator

Troy Saffle
(208) 528-2650

Preliminary Assessment Program Coordinator

Kevin Kostka
(208) 515-6696

Send me an email when this page has been updated

ver: 3.5.2 | last updated:
Jump back to top of page button