# Relationship history for MSHA mine 4300301

Current hierarchy: **John (Roddy)  Rice → Vermont Multicolor Slate Quarries → Lucky Strike Eagle 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:** Michael J  Tatko Jr → Lucky Strike Eagle Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Colored Slate Products Company → Lucky Strike Eagle Quarry; 1978-03-09 to 1996-06-03; source msha-controller-operator-history
- **controller_controls_operator:** Michael J  Tatko Jr → Colored Slate Products Company; 1978-03-09 to 1996-06-03; source msha-controller-operator-history
- **operator_operates_mine:** K V Sbardella Slate → Lucky Strike Eagle Quarry; 1996-06-04 to 1997-05-12; source msha-controller-operator-history
- **controller_controls_mine:** Karl  Sbardella → Lucky Strike Eagle Quarry; 1996-06-04 to 1997-05-12; source msha-controller-operator-history
- **controller_controls_operator:** Karl  Sbardella → K V Sbardella Slate; 1996-06-04 to 1997-05-12; source msha-controller-operator-history
- **operator_operates_mine:** Jeffrey Ferguson Slate → Lucky Strike Eagle Quarry; 1997-05-13 to 2016-09-28; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  Ferguson → Lucky Strike Eagle Quarry; 1997-05-13 to 2016-09-28; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Ferguson → Jeffrey Ferguson Slate; 1997-05-13 to 2016-09-28; source msha-controller-operator-history
- **controller_controls_mine:** William J  Enny → Lucky Strike Eagle Quarry; 2014-07-23 to 2016-09-28; source msha-controller-operator-history
- **operator_operates_mine:** Vermont Multicolor Slate Quarries → Lucky Strike Eagle Quarry; 2016-09-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William J  Enny → Vermont Multicolor Slate Quarries; 2016-09-29 to 2016-09-28; source msha-controller-operator-history
- **controller_controls_mine:** John (Roddy)  Rice → Lucky Strike Eagle Quarry; 2016-09-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John (Roddy)  Rice → Vermont Multicolor Slate Quarries; 2016-09-29 to current/open; source msha-controller-operator-history