# Relationship history for MSHA mine 4003142

Current hierarchy: **Monica J  Gawet → Tennessee Marble Company → Endsley Quarry**

- 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:** Monica J  Gawet → Endsley Quarry; 1997-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tennessee Valley Marble Inc → Endsley Quarry; 1999-03-01 to 2003-08-10; source msha-controller-operator-history
- **controller_controls_mine:** Robert K  Zelle et al → Endsley Quarry; 1999-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert K  Zelle et al → Tennessee Valley Marble Inc; 1999-03-01 to 2003-08-10; source msha-controller-operator-history
- **controller_controls_operator:** William  Puryear et al → Tennessee Valley Marble Inc; 1999-03-01 to 2003-08-10; source msha-controller-operator-history
- **operator_operates_mine:** Tennessee Valley Marble, LLC → Endsley Quarry; 2003-08-11 to 2007-03-26; source msha-controller-operator-history
- **controller_controls_mine:** Thomas S  White et al → Endsley Quarry; 2003-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas S  White et al → Tennessee Valley Marble, LLC; 2003-08-11 to 2007-03-26; source msha-controller-operator-history
- **operator_operates_mine:** Tennessee Marble Company → Endsley Quarry; 2007-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Monica J  Gawet → Tennessee Marble Company; 2007-03-27 to current/open; source msha-controller-operator-history