# Relationship history for MSHA mine 3101356

Current hierarchy: **Doug  Dalton → Cardinal Quarries LLC → Smethport 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

- **operator_operates_mine:** Maymead Lime Company Inc → Smethport Quarry; 1950-01-01 to 1978-08-29; source msha-controller-operator-history
- **controller_controls_mine:** Wiley B  Roark et al → Smethport Quarry; 1950-01-01 to 1986-12-19; source msha-controller-operator-history
- **controller_controls_operator:** Wiley B  Roark et al → Maymead Lime Company Inc; 1950-01-01 to 1978-08-29; source msha-controller-operator-history
- **controller_controls_mine:** William M  McCrary → Smethport Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lyalls Construction Company → Smethport Quarry; 1978-08-30 to 1981-04-27; source msha-controller-operator-history
- **controller_controls_mine:** James A  Lyalls → Smethport Quarry; 1978-08-30 to 1981-04-27; source msha-controller-operator-history
- **controller_controls_operator:** James A  Lyalls → Lyalls Construction Company; 1978-08-30 to 1981-04-27; source msha-controller-operator-history
- **operator_operates_mine:** Mc Crary Stone Service Inc → Smethport Quarry; 1981-04-28 to 1987-03-08; source msha-controller-operator-history
- **controller_controls_operator:** William M  McCrary → Mc Crary Stone Service Inc; 1981-04-28 to 1987-03-08; source msha-controller-operator-history
- **controller_controls_mine:** James M  Vannoy → Smethport Quarry; 1986-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cardinal Stone Company Inc → Smethport Quarry; 1987-03-09 to 2003-10-15; source msha-controller-operator-history
- **controller_controls_operator:** James M  Vannoy → Cardinal Stone Company Inc; 1987-03-09 to 2003-10-15; source msha-controller-operator-history
- **operator_operates_mine:** Cardinal Quarries LLC → Smethport Quarry; 2003-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Doug  Dalton → Smethport Quarry; 2003-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Doug  Dalton → Cardinal Quarries LLC; 2003-10-16 to current/open; source msha-controller-operator-history