# Relationship history for MSHA mine 4103605

Current hierarchy: **Roger  Albert → CSA Materials Inc → Turner Pit**

- 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:** Jack  Albert  et al → Turner Pit; 1950-01-01 to 2017-01-29; source msha-controller-operator-history
- **operator_operates_mine:** S T C C Inc → Turner Pit; 1990-03-01 to 1993-07-27; source msha-controller-operator-history
- **controller_controls_mine:** Redland Plc → Turner Pit; 1990-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Redland Plc → S T C C Inc; 1990-03-01 to 1993-07-27; source msha-controller-operator-history
- **controller_controls_mine:** Trinity Industries Inc → Turner Pit; 1991-12-01 to 2018-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Trinity Materials Inc → Turner Pit; 1993-07-28 to 1996-04-28; source msha-controller-operator-history
- **controller_controls_operator:** Trinity Industries Inc → Trinity Materials Inc; 1993-07-28 to 1996-04-28; source msha-controller-operator-history
- **operator_operates_mine:** CSA Materials Inc → Turner Pit; 1996-04-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Albert  et al → CSA Materials Inc; 1996-04-29 to 2017-01-29; source msha-controller-operator-history
- **controller_controls_mine:** Roger  Albert → Turner Pit; 2017-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Albert → CSA Materials Inc; 2017-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Arcosa, Inc → Turner Pit; 2018-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arcosa, Inc → Trinity Materials Inc; 2018-11-01 to 1996-04-28; source msha-controller-operator-history