{"@context":{"@vocab":"https://schema.org/"},"@type":"ItemList","@id":"https://api.ai-analytics.org/api/v1/msha/violations/check?name=Luke%20B%20Duffield","name":"Luke B Duffield","_source":{"data_provider":"AI Analytics","data_provider_url":"https://api.ai-analytics.org","license":"https://creativecommons.org/publicdomain/zero/1.0/","primary_source":"https://arlweb.msha.gov/OpenGovernmentData/OGIMSHA.asp","generated_at":"2026-07-27T19:10:13.565Z"},"summary":{"total_violations":212,"significant_and_substantial":30,"proposed_penalty_usd":41015,"amount_paid_usd":41015},"top_violated_rules":[{"part_section":"56.14107(a)","n":16},{"part_section":"56.20003(a)","n":14},{"part_section":"56.14112(b)","n":14},{"part_section":"56.14207","n":8},{"part_section":"56.14100(b)","n":8},{"part_section":"56.9300(a)","n":7},{"part_section":"56.12032","n":7},{"part_section":"56.14132(a)","n":6},{"part_section":"56.12008","n":6},{"part_section":"56.14101(a)(2)","n":5}],"recent_violations":[{"violation_no":"5170035","issue_date":"12/30/2025","mine_id":"0302031","controller_name":"Matt  Duffield; Luke B Duffield; David D Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"56.14112(b)","negligence":"ModNegligence","proposed_penalty":151,"canonical_url":"https://api.ai-analytics.org/mine-violation/5170035"},{"violation_no":"5170036","issue_date":"12/30/2025","mine_id":"0302031","controller_name":"Matt  Duffield; Luke B Duffield; David D Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"56.14115(b)","negligence":"ModNegligence","proposed_penalty":151,"canonical_url":"https://api.ai-analytics.org/mine-violation/5170036"},{"violation_no":"5170037","issue_date":"12/30/2025","mine_id":"0302031","controller_name":"Matt  Duffield; Luke B Duffield; David D Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"50.20-1","negligence":"ModNegligence","proposed_penalty":151,"canonical_url":"https://api.ai-analytics.org/mine-violation/5170037"},{"violation_no":"5170030","issue_date":"12/16/2025","mine_id":"0301111","controller_name":"Matt  Duffield; Luke B Duffield; David D Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"56.12028","negligence":"ModNegligence","proposed_penalty":151,"canonical_url":"https://api.ai-analytics.org/mine-violation/5170030"},{"violation_no":"5170028","issue_date":"12/15/2025","mine_id":"0301111","controller_name":"Matt  Duffield; Luke B Duffield; David D Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"56.4201(a)(1)","negligence":"ModNegligence","proposed_penalty":151,"canonical_url":"https://api.ai-analytics.org/mine-violation/5170028"},{"violation_no":"5170029","issue_date":"12/15/2025","mine_id":"0301111","controller_name":"Matt  Duffield; Luke B Duffield; David D Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"56.14101(a)(2)","negligence":"ModNegligence","proposed_penalty":151,"canonical_url":"https://api.ai-analytics.org/mine-violation/5170029"},{"violation_no":"9795364","issue_date":"12/02/2024","mine_id":"0302062","controller_name":"Luke B Duffield","violator_name":"Duffield Aggregate, LLC","sig_sub":"N","part_section":"56.23002(a)","negligence":"ModNegligence","proposed_penalty":151,"canonical_url":"https://api.ai-analytics.org/mine-violation/9795364"},{"violation_no":"9795365","issue_date":"12/02/2024","mine_id":"0302062","controller_name":"Luke B Duffield","violator_name":"Duffield Aggregate, LLC","sig_sub":"N","part_section":"56.4201(b)","negligence":"LowNegligence","proposed_penalty":151,"canonical_url":"https://api.ai-analytics.org/mine-violation/9795365"},{"violation_no":"9646675","issue_date":"12/02/2021","mine_id":"0302031","controller_name":"David D Duffield; Luke B Duffield; Ronald M Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"56.15001","negligence":"ModNegligence","proposed_penalty":125,"canonical_url":"https://api.ai-analytics.org/mine-violation/9646675"},{"violation_no":"9646676","issue_date":"12/02/2021","mine_id":"0302031","controller_name":"David D Duffield; Luke B Duffield; Ronald M Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"46.9(a)","negligence":"HighNegligence","proposed_penalty":125,"canonical_url":"https://api.ai-analytics.org/mine-violation/9646676"},{"violation_no":"9646672","issue_date":"12/01/2021","mine_id":"0302031","controller_name":"David D Duffield; Luke B Duffield; Ronald M Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"56.14100(b)","negligence":"ModNegligence","proposed_penalty":125,"canonical_url":"https://api.ai-analytics.org/mine-violation/9646672"},{"violation_no":"9646673","issue_date":"12/01/2021","mine_id":"0302031","controller_name":"David D Duffield; Luke B Duffield; Ronald M Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"56.14132(a)","negligence":"ModNegligence","proposed_penalty":125,"canonical_url":"https://api.ai-analytics.org/mine-violation/9646673"},{"violation_no":"9646674","issue_date":"12/01/2021","mine_id":"0302031","controller_name":"David D Duffield; Luke B Duffield; Ronald M Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"56.14101(a)(2)","negligence":"ModNegligence","proposed_penalty":125,"canonical_url":"https://api.ai-analytics.org/mine-violation/9646674"},{"violation_no":"9742546","issue_date":"11/21/2023","mine_id":"0301618","controller_name":"Matt  Duffield; Luke B Duffield; David D Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"56.14112(a)(1)","negligence":"ModNegligence","proposed_penalty":143,"canonical_url":"https://api.ai-analytics.org/mine-violation/9742546"},{"violation_no":"9762292","issue_date":"11/21/2023","mine_id":"2302077","controller_name":"Luke B Duffield","violator_name":"Duffield Aggregate of Missouri, LLC","sig_sub":"N","part_section":"56.20003(a)","negligence":"ModNegligence","proposed_penalty":147,"canonical_url":"https://api.ai-analytics.org/mine-violation/9762292"},{"violation_no":"9762293","issue_date":"11/21/2023","mine_id":"2302077","controller_name":"Luke B Duffield","violator_name":"Duffield Aggregate of Missouri, LLC","sig_sub":"N","part_section":"56.14207","negligence":"ModNegligence","proposed_penalty":147,"canonical_url":"https://api.ai-analytics.org/mine-violation/9762293"},{"violation_no":"9762294","issue_date":"11/21/2023","mine_id":"2302077","controller_name":"Luke B Duffield","violator_name":"Duffield Aggregate of Missouri, LLC","sig_sub":"N","part_section":"56.20003(a)","negligence":"ModNegligence","proposed_penalty":147,"canonical_url":"https://api.ai-analytics.org/mine-violation/9762294"},{"violation_no":"9762295","issue_date":"11/21/2023","mine_id":"2302077","controller_name":"Luke B Duffield","violator_name":"Duffield Aggregate of Missouri, LLC","sig_sub":"Y","part_section":"56.18002(a)","negligence":"ModNegligence","proposed_penalty":161,"canonical_url":"https://api.ai-analytics.org/mine-violation/9762295"},{"violation_no":"5171023","issue_date":"11/20/2025","mine_id":"0300910","controller_name":"Matt  Duffield; Luke B Duffield; David D Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"56.18002(b)","negligence":"HighNegligence","proposed_penalty":151,"canonical_url":"https://api.ai-analytics.org/mine-violation/5171023"},{"violation_no":"5171024","issue_date":"11/20/2025","mine_id":"0300910","controller_name":"Matt  Duffield; Luke B Duffield; David D Duffield","violator_name":"Ronnie Duffield Gravel Company","sig_sub":"N","part_section":"56.18002(d)","negligence":"ModNegligence","proposed_penalty":151,"canonical_url":"https://api.ai-analytics.org/mine-violation/5171024"}]}