Data / Mines / Wisconsin / Lannon Quarry
Lannon Quarry, Waukesha County, Wisconsin: 17 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Lannon Quarry is an active crushed, broken limestone surface mine in Waukesha County, Wisconsin, operated by Lannon Stone Products Inc with 6 employees on MSHA's record (mine ID 4700097). Since January 1, 2022 MSHA inspectors issued 17 citations and orders there with $2,531 in proposed penalties, and 5 accident reports were filed there, with 5 injury or illness cases.
The request: Watch Lannon Quarry (MSHA mine ID 4700097) in Waukesha County, Wisconsin: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 4700097
- Status
- Active since December 5, 2011
- Main commodity
- Crushed, broken limestone
- Mine type
- Surface
- County
- Waukesha County, Wisconsin
- Nearest town
- Lannon
- Operator
- Lannon Stone Products Inc
- Parent company
- Dawson Trust Dated June 20 2009
- Employees
- 6
- MSHA field office
- Peru IL Field Office
- Citations and orders since January 1, 2022
- 17
- Significant and substantial
- 1 (5.9%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $2,531
- Amount paid so far
- $2,531
- Inspections
- 10
- Inspector hours on site
- 150
- Citations per inspection
- 1.70 (all mines 2.30)
- Accident reports
- 5
- Injury and illness cases
- 5
- Fatalities
- 0
- Latest MSHA record
- October 19, 2026
- Citations issued to contractors here
- 2 ($266 proposed)
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 1 | 0 | $133 | 0 |
| 2023 | 10 | 0 | $1,462 | 3 |
| 2024 | 3 | 1 | $483 | 1 |
| 2025 | 1 | 0 | $151 | 0 |
| 2026 | 2 | 0 | $302 | 1 |
Standards cited most at Lannon Quarry
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.13011 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.4102 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.4402 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 1 |
| 30 CFR 41.12 | Notice of legal identity | 1 |
Injury and illness cases at Lannon Quarry
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 2 |
| No lost time, or an occupational illness | 3 |
What the accident reports at Lannon Quarry describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 2 |
| Handling of materials | 2 |
| Exploding vessels under pressure | 1 |
Equipment named in accident reports at Lannon Quarry
| Equipment | Reports |
|---|---|
| Trucks | 1 |
Other open mines in Waukesha County, Wisconsin
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Sussex Quarry | Lannon Stone Products Inc | Waukesha County, WI | Crushed, broken limestone | 20 | 40 |
| Monacelli Stone Company Inc | Monacelli Stone Company Inc | Waukesha County, WI | Crushed, broken limestone | 5 | 37 |
| West Quarry | Lannon Stone Products Inc | Waukesha County, WI | Crushed, broken limestone | 17 | 35 |
| Waukesha Lime & Stone | Payne & Dolan Inc | Waukesha County, WI | Crushed, broken limestone | 25 | 34 |
| Amrize Colgate Pit Yard 1 | Amrize Mid-America Inc. | Waukesha County, WI | Construction sand and gravel | 4 | 24 |
| Lisbon Pit | Lannon Stone Products Inc | Waukesha County, WI | Construction sand and gravel | 6 | 19 |
| Genesee Pit & Mill | Genesee Aggregate Corp. | Waukesha County, WI | Construction sand and gravel | 3 | 18 |
| North Lake Pit | Halquist Stone Company Inc | Waukesha County, WI | Construction sand and gravel | 6 | 17 |
| PC10 | Payne & Dolan Inc | Waukesha County, WI | Construction sand and gravel | 2 | 14 |
| Portable #1 | Johnson Sand & Gravel Inc | Waukesha County, WI | Construction sand and gravel | 4 | 12 |
| Lemke Stone Inc | Lemke Stone Inc | Waukesha County, WI | Dimension limestone | 2 | 12 |
| Halquist Stone Company Cawley's Quarry | Halquist Stone Company Inc | Waukesha County, WI | Crushed, broken limestone | 3 | 10 |
| Ottawa Sand & Gravel | Genesee Aggregate Corp. | Waukesha County, WI | Construction sand and gravel | 3 | 9 |
| Portable #2 | Johnson Sand & Gravel Inc | Waukesha County, WI | Construction sand and gravel | 3 | 6 |
| Dousman Pit | Lannon Stone Products Inc | Waukesha County, WI | Construction sand and gravel | 2 | 6 |
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.