Data / Mines / Iowa / Conklin Quarry and Mill
Conklin Quarry and Mill: 27 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Conklin Quarry and Mill is an active crushed, broken limestone surface mine in Johnson County, Iowa, operated by River Products Company, Inc. with 17 employees on MSHA's record (mine ID 1300193). Since January 1, 2022 MSHA inspectors issued 27 citations and orders there with $4,494 in proposed penalties, and 5 accident reports were filed there, with 5 injury or illness cases.
The request: Watch Conklin Quarry and Mill (MSHA mine ID 1300193) in Johnson County, Iowa: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 1300193
- Status
- Active since May 11, 2015
- Main commodity
- Crushed, broken limestone
- Mine type
- Surface
- County
- Johnson County, Iowa
- Nearest town
- Iowa City
- Operator
- River Products Company, Inc.
- Employees
- 17
- MSHA field office
- Peru IL Field Office
- Citations and orders since January 1, 2022
- 27
- Significant and substantial
- 2 (7.4%)
- Closure orders
- 0
- High negligence or reckless
- 1
- Proposed penalties
- $4,494
- Amount paid so far
- $4,494
- Inspections
- 12
- Inspector hours on site
- 130
- Citations per inspection
- 2.25 (all mines 2.30)
- Accident reports
- 5
- Injury and illness cases
- 5
- Fatalities
- 0
- Latest MSHA record
- August 7, 2026
- Citations issued to contractors here
- 2 ($298 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 | 5 | 1 | $784 | 1 |
| 2023 | 7 | 1 | $1,416 | 3 |
| 2024 | 7 | 0 | $1,086 | 1 |
| 2025 | 1 | 0 | $151 | 0 |
| 2026 | 7 | 0 | $1,057 | 0 |
Standards cited most at Conklin Quarry and Mill
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 56.14112 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14130 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.13011 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.4603 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14109 | Surface metal and nonmetal mines | 1 |
| 30 CFR 46.9 | Training at sand, gravel and surface stone mines | 1 |
| 30 CFR 56.4200 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Conklin Quarry and Mill
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 3 |
| No lost time, or an occupational illness | 2 |
What the accident reports at Conklin Quarry and Mill describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 2 |
| Slip or fall of person | 1 |
| Powered haulage | 1 |
| Machinery | 1 |
Equipment named in accident reports at Conklin Quarry and Mill
| Equipment | Reports |
|---|---|
| Front-end loader | 1 |
| Ore haulage trucks - off highway trucks | 1 |
Other open mines in Johnson County, Iowa
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Klein Quarry | River Products Company, Inc. | Johnson County, IA | Crushed, broken limestone | 12 | 29 |
| Williams Sandpit | S & G Materials | Johnson County, IA | Construction sand and gravel | 7 | 25 |
| Stripping Crew | River Products Company, Inc. | Johnson County, IA | Sand, industrial | 3 | 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.