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Data / Mines / Utah / Portable, Crushing Plant/AMI Thunderbird

Portable, Crushing Plant/AMI Thunderbird: 61 MSHA citations

Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.

Portable, Crushing Plant/AMI Thunderbird is an active construction sand and gravel surface mine in Utah County, Utah, operated by Kenny Seng Construction, Inc. with 7 employees on MSHA's record (mine ID 4202153). Since January 1, 2022 MSHA inspectors issued 61 citations and orders there with $46,219 in proposed penalties, and 5 accident reports were filed there, with 4 injury or illness cases.

The request: Watch Portable, Crushing Plant/AMI Thunderbird (MSHA mine ID 4202153) in Utah County, Utah: each new citation and each accident report. $10 of work on sign-up, no card.

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MSHA mine ID
4202153
Status
Active since August 8, 2022
Main commodity
Construction sand and gravel
Mine type
Surface
County
Utah County, Utah
Nearest town
Provo
Operator
Kenny Seng Construction, Inc.
Employees
7
MSHA field office
Salt Lake City UT Field Office
Citations and orders since January 1, 2022
61
Significant and substantial
16 (26.2%)
Closure orders
0
High negligence or reckless
8
Proposed penalties
$46,219
Amount paid so far
$46,219
Inspections
13
Inspector hours on site
128
Citations per inspection
4.69 (all mines 2.30)
Accident reports
5
Injury and illness cases
4
Fatalities
0
Latest MSHA record
October 8, 2026

Citations and injury cases by year

Calendar years since 2022; 2026 runs to the date of the MSHA files.

YearCitations and ordersSignificant and substantialProposed penaltiesInjury and illness cases
2022113$3,0921
2023289$21,2252
2024174$20,1480
202530$1,6030
202620$1511

Standards cited most at Portable, Crushing Plant/AMI Thunderbird

Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.

StandardWhat the part coversCitations
30 CFR 56.14107Surface metal and nonmetal mines15
30 CFR 56.14132Surface metal and nonmetal mines4
30 CFR 56.12004Surface metal and nonmetal mines3
30 CFR 56.14100Surface metal and nonmetal mines3
30 CFR 56.4201Surface metal and nonmetal mines3
30 CFR 56.11002Surface metal and nonmetal mines3
30 CFR 56.9300Surface metal and nonmetal mines2
30 CFR 56.14101Surface metal and nonmetal mines2
30 CFR 56.14130Surface metal and nonmetal mines2
30 CFR 47.41Hazard communication2
30 CFR 56.16005Surface metal and nonmetal mines2
30 CFR 56.14207Surface metal and nonmetal mines2
30 CFR 56.12008Surface metal and nonmetal mines2
30 CFR 56.12005Surface metal and nonmetal mines2
30 CFR 56.11001Surface metal and nonmetal mines2

Injury and illness cases at Portable, Crushing Plant/AMI Thunderbird

Accident reports by degree of injury, as the operator reported them to MSHA.

DegreeCases
Days away from work or restricted activity1
No lost time, or an occupational illness3

What the accident reports at Portable, Crushing Plant/AMI Thunderbird describe

Accident classification, as MSHA codes the circumstances that contributed most directly.

ClassificationReports
Handtools (nonpowered)2
Slip or fall of person1
Machinery1
Exploding vessels under pressure1

Equipment named in accident reports at Portable, Crushing Plant/AMI Thunderbird

EquipmentReports
Hand tools (not powered)2
Bulldozer2
Trucks1

Other open mines in Utah County, Utah

MineOperatorCountyMain commodityEmployeesCitations since 2022
TrixieTintic Consolidated Metals LLCUtah County, UTGold ore70125
South PelicanCMC Rock, LLCUtah County, UTConstruction sand and gravel2197
Talons CoveTM Crushing, LLCUtah County, UTConstruction sand and gravel1561
Ekins #2Maverick Crushing, LLCUtah County, UTConstruction sand and gravel259
Gray Cliffs PortableS & L IncUtah County, UTConstruction sand and gravel254
Bluffdale PitArizona MaterialsUtah County, UTConstruction sand and gravel352
Highland PitArizona MaterialsUtah County, UTConstruction sand and gravel1039
BenjaminArizona MaterialsUtah County, UTConstruction sand and gravel624
Keigley QuarryStaker & Parson CompaniesUtah County, UTCrushed, broken stone2217
Salem PitGeneva Rock Products IncUtah County, UTConstruction sand and gravel217
Pelican PointGeneva Rock Products IncUtah County, UTConstruction sand and gravel2014
Rocky Ridge PitVanCon, Inc.Utah County, UTConstruction sand and gravel214
Cedar Fort QuarryCMC Rock, LLCUtah County, UTConstruction sand and gravel213
24-1035W W Clyde & Co.Utah County, UTConstruction sand and gravel212
West MountainCMC Rock, LLCUtah County, UTConstruction sand and gravel212

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.