# Relationship history for MSHA mine 5100175

Current hierarchy: **Mark  Jernigan; Denise  Jernigan → Big Island Hauling Inc dba Soil Plus → PremierTrack 300 CRUSHER**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** West Hawaii Concrete Ltd → PremierTrack 300 CRUSHER; 1950-01-01 to 1980-09-22; source msha-controller-operator-history
- **controller_controls_mine:** Mc Clean James S → PremierTrack 300 CRUSHER; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Clean James S → West Hawaii Concrete Ltd; 1950-01-01 to 1980-09-22; source msha-controller-operator-history
- **operator_operates_mine:** West Hawaii Concrete Ltd → PremierTrack 300 CRUSHER; 1980-09-23 to 2019-11-25; source msha-controller-operator-history
- **controller_controls_mine:** Carl  Simons → PremierTrack 300 CRUSHER; 1980-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl  Simons → West Hawaii Concrete Ltd; 1980-09-23 to 2019-11-25; source msha-controller-operator-history
- **controller_controls_mine:** Mark  Jernigan et al → PremierTrack 300 CRUSHER; 2009-10-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** SOIL PLUS → PremierTrack 300 CRUSHER; 2019-11-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Jernigan et al → SOIL PLUS; 2019-11-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Denise  Jernigan et al → SOIL PLUS; 2019-11-26 to current/open; source msha-controller-operator-history