Northstar Materials Inc dba Knife River Materials safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Regular Safety and Health Inspection
Crusher #43527 · 21027020.8 on-site hours reported
Regular Safety and Health Inspection
Crusher #43516 · 21030960.8 on-site hours reported
Regular Safety and Health Inspection
Crusher #43521 · 21035721.3 on-site hours reported
Compliance Follow-up Inspection
Crusher #43521 · 21035721.5 on-site hours reported
Regular Safety and Health Inspection
Crusher #43521 · 21035727.5 on-site hours reported
Testing grounding systems.
Screen #44535 · 210350230 CFR 56.12028
Examination of working places.
Screen #44535 · 210350230 CFR 56.18002(b)
Testing grounding systems.
Crusher #43521 · 210357230 CFR 56.12028 · Significant and substantial (S&S)
Identification of power switches.
Crusher #43521 · 210357230 CFR 56.12018
Controls and switches.
Crusher #43521 · 210357230 CFR 56.12002
Horns and backup alarms.
Crusher #43521 · 210357230 CFR 56.14132(a)
Self-propelled equipment.
Crusher #43521 · 210357230 CFR 56.4230(a)(1)
Electrical conductors.
Crusher #43521 · 210357230 CFR 56.12004
Regular Safety and Health Inspection
Screen #44535 · 21035024.5 on-site hours reported
Mine Idle Activity
Wash Screw #45708 · 21036422.0 on-site hours reported
Mine Idle Activity
Crusher #43316 · 21038701.0 on-site hours reported
Notification of commencement of operations and closing of mines.
Wash Screw #45708 · 210364230 CFR 56.1000 · $151.00 proposed penalty
Regular Safety and Health Inspection
Wash Screw #45719 · 21036261.3 on-site hours reported
Mine Idle Activity
WASH SCREW #45723 · 21036270.0 on-site hours reported
Regular Safety and Health Inspection
Screen Plant 44540 · 21034192.0 on-site hours reported
Electrical conductors.
Screen Plant 44540 · 210341930 CFR 56.12004 · $151.00 proposed penalty
Regular Safety and Health Inspection
Crusher #43519 · 21027181.5 on-site hours reported
Regular Safety and Health Inspection
Crusher #43517 · 21031851.0 on-site hours reported
Regular Safety and Health Inspection
Wash Screw #45719 · 21036261.0 on-site hours reported
Correction of dangerous conditions.
Crusher #43517 · 210318530 CFR 56.12030 · $151.00 proposed penalty
Sources and definitions
MSHA Violations (issue date), Accidents (accident date) and Inspections (begin date).
Violation titles use current CFR headings to identify the cited rule; they are not the inspector’s account of what happened.
Status is from the current MSHA Mines snapshot, not the selected reporting period. Closed records can retain their last reported controller/operator.
Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.
Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.
S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.
Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.
Portfolio totals use current mine membership, including events before the current owner or operator's tenure.