# Relationship history for MSHA mine 4104143

Current hierarchy: **Carey D  Smith; Ora E  Smith → Texcon Materials LTD → Pettibone**

- 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:** Mary  Fulton → Pettibone; 1995-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brazos Valley Sand & Gravel Inc → Pettibone; 1999-11-01 to 2002-12-04; source msha-controller-operator-history
- **controller_controls_operator:** Mary  Fulton → Brazos Valley Sand & Gravel Inc; 1999-11-01 to 2002-12-04; source msha-controller-operator-history
- **operator_operates_mine:** Texcon Materials LTD → Pettibone; 2002-12-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carey D  Smith Et Al → Pettibone; 2002-12-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carey D  Smith Et Al → Texcon Materials LTD; 2002-12-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ora E  Smith Et Al → Texcon Materials LTD; 2002-12-05 to current/open; source msha-controller-operator-history