# Relationship history for MSHA mine 1700773

Current hierarchy: **Christopher  Pizey; Jonathan  Pizey → Hissong Ready Mix and Aggregates LLC → Stonefields 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Stonefields Aggregates LLC → Stonefields Crusher; 2004-10-20 to 2017-04-11; source msha-controller-operator-history
- **controller_controls_mine:** Kurt D  Hissong et al → Stonefields Crusher; 2004-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kurt D  Hissong et al → Stonefields Aggregates LLC; 2004-10-20 to 2017-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery V  Stevens et al → Stonefields Aggregates LLC; 2004-10-20 to 2017-04-11; source msha-controller-operator-history
- **operator_operates_mine:** Hissong Ready Mix and Aggregates LLC → Stonefields Crusher; 2017-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chris  Pizey et al → Stonefields Crusher; 2017-04-12 to 2023-10-03; source msha-controller-operator-history
- **controller_controls_operator:** Chris  Pizey et al → Hissong Ready Mix and Aggregates LLC; 2017-04-12 to 2023-10-03; source msha-controller-operator-history
- **controller_controls_operator:** Kurt  Hissong et al → Hissong Ready Mix and Aggregates LLC; 2017-04-12 to 2023-10-03; source msha-controller-operator-history
- **controller_controls_mine:** Christopher  Pizey et al → Stonefields Crusher; 2023-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher  Pizey et al → Hissong Ready Mix and Aggregates LLC; 2023-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jonathan  Pizey et al → Hissong Ready Mix and Aggregates LLC; 2023-10-04 to current/open; source msha-controller-operator-history