Data / Mines / Michigan / Portable Plant #1 Pioneer
Portable Plant #1 Pioneer: 0 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Portable Plant #1 Pioneer is an intermittent construction sand and gravel surface mine in Marquette County, Michigan, operated by Associated Constructors LLC with 2 employees on MSHA's record (mine ID 2003486). Since January 1, 2022 MSHA inspectors issued 0 citations and orders there with $0 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch Portable Plant #1 Pioneer (MSHA mine ID 2003486) in Marquette County, Michigan: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 2003486
- Status
- Intermittent since June 16, 2026
- Main commodity
- Construction sand and gravel
- Mine type
- Surface
- County
- Marquette County, Michigan
- Nearest town
- Negaunee, MI
- Operator
- Associated Constructors LLC
- Employees
- 2
- MSHA field office
- Marquette MI Field Office
- Citations and orders since January 1, 2022
- 0
- Inspections
- 2
- Inspector hours on site
- 3
- Citations per inspection
- 0.00 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- September 9, 2026
Other open mines in Marquette County, Michigan
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Tilden Mine | Tilden Mining Company, LC. | Marquette County, MI | Iron ore | 860 | 1,620 |
| Eagle Mine | Eagle Mine LLC | Marquette County, MI | Nickel ore | 170 | 228 |
| Humboldt Mill | Eagle Mine LLC | Marquette County, MI | Nickel ore | 103 | 77 |
| Crusher #4 | A. Lindberg & Sons, Inc. | Marquette County, MI | Construction sand and gravel | 3 | 34 |
| Smith Quarry | Smith Construction, Inc. | Marquette County, MI | Construction sand and gravel | 4 | 21 |
| Screening Plant #1 | Associated Constructors LLC | Marquette County, MI | Construction sand and gravel | 0 | 20 |
| Lindberg's County Road 480 Gravel Pit | A. Lindberg & Sons, Inc. | Marquette County, MI | Construction sand and gravel | 11 | 12 |
| Crusher #3 | A. Lindberg & Sons, Inc. | Marquette County, MI | Construction sand and gravel | 3 | 9 |
| Crushing Plant #2 | A. Lindberg & Sons, Inc. | Marquette County, MI | Construction sand and gravel | 3 | 8 |
| SP-13 | A. Lindberg & Sons, Inc. | Marquette County, MI | Iron ore | 2 | 7 |
| SP-14 | A. Lindberg & Sons, Inc. | Marquette County, MI | Construction sand and gravel | 2 | 7 |
| Track Jaw | Marquette Mineral, LLC | Marquette County, MI | Crushed, broken granite | 2 | 7 |
| A. Lindberg & Sons, Inc.- Drill Operation 1 | A. Lindberg & Sons, Inc. | Marquette County, MI | Construction sand and gravel | 2 | 4 |
| Crusher #3 | M.J. Van Damme Trucking, Inc. | Marquette County, MI | Construction sand and gravel | 4 | 3 |
| Cedarapids | Geomaterials LLC | Marquette County, MI | Construction sand and gravel | 1 | 3 |
US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.