# Relationship history for MSHA mine 4503363

Current hierarchy: **Arcosa, Inc → ACG Materials → Kitsap Plant 1872**

- 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

- **controller_controls_mine:** Sharon  Jack et al → Kitsap Plant 1872; 1991-05-01 to 2015-02-24; source msha-controller-operator-history
- **operator_operates_mine:** Kitsap Reclamation & Materials Inc → Kitsap Plant 1872; 1997-04-01 to 2018-06-10; source msha-controller-operator-history
- **controller_controls_mine:** Patrick  Lockhart → Kitsap Plant 1872; 1997-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patrick  Lockhart → Kitsap Reclamation & Materials Inc; 1997-04-01 to 2018-06-10; source msha-controller-operator-history
- **controller_controls_mine:** H I G Capital LLC → Kitsap Plant 1872; 2015-02-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** JA Jack & Sons → Kitsap Plant 1872; 2018-06-11 to 2018-12-05; source msha-controller-operator-history
- **controller_controls_operator:** H I G Capital LLC → JA Jack & Sons; 2018-06-11 to 2018-12-05; source msha-controller-operator-history
- **controller_controls_operator:** Sharon  Jack et al → JA Jack & Sons; 2018-06-11 to 2015-02-24; source msha-controller-operator-history
- **controller_controls_operator:** Linda  Jack Liebich et al → JA Jack & Sons; 2018-06-11 to 2015-02-24; source msha-controller-operator-history
- **operator_operates_mine:** ACG Materials → Kitsap Plant 1872; 2018-12-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Arcosa, Inc → Kitsap Plant 1872; 2018-12-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arcosa, Inc → ACG Materials; 2018-12-06 to current/open; source msha-controller-operator-history