# Relationship history for MSHA mine 2700434

Current hierarchy: **Charles W St Pierre; Albert A St Pierre; Jeremy  St Pierre → St. Pierre, Inc. → Portable Crusher Crew**

- 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:** Dominic T  St Pierre et al → Portable Crusher Crew; 1950-01-01 to 2022-01-31; source msha-controller-operator-history
- **operator_operates_mine:** St. Pierre, Inc. → Portable Crusher Crew; 2008-08-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dominic T  St Pierre et al → St. Pierre, Inc.; 2008-08-27 to 2022-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Charles W  St Pierre et al → St. Pierre, Inc.; 2008-08-27 to 2022-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Charles W St Pierre et al → Portable Crusher Crew; 2022-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles W St Pierre et al → St. Pierre, Inc.; 2022-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeremy  St Pierre et al → St. Pierre, Inc.; 2022-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Albert A St Pierre et al → St. Pierre, Inc.; 2022-02-01 to current/open; source msha-controller-operator-history