# Relationship history for MSHA mine 3001529

Current hierarchy: **Colas S A → Upstone Materials Inc. → Lewis 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:** Allied-Signal Inc → Lewis Quarry; 1950-01-01 to 1980-05-12; source msha-controller-operator-history
- **operator_operates_mine:** Torrington Industries Inc → Lewis Quarry; 1950-01-01 to 1978-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Theodore  Zoli → Lewis Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Theodore  Zoli → Torrington Industries Inc; 1950-01-01 to 1978-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Edward  Hayes → Lewis Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Special Aggregates Corp → Lewis Quarry; 1978-04-20 to 1978-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Edward  Hayes → Special Aggregates Corp; 1978-04-20 to 1978-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Allied Chemical Corp → Lewis Quarry; 1978-08-01 to 1980-04-24; source msha-controller-operator-history
- **controller_controls_operator:** Allied-Signal Inc → Allied Chemical Corp; 1978-08-01 to 1980-04-24; source msha-controller-operator-history
- **operator_operates_mine:** Torrington Sand & Stone → Lewis Quarry; 1980-04-25 to 1995-01-10; source msha-controller-operator-history
- **controller_controls_mine:** Theodore  Zoli → Lewis Quarry; 1980-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Theodore  Zoli → Torrington Sand & Stone; 1980-04-25 to 1995-01-10; source msha-controller-operator-history
- **operator_operates_mine:** Lewis Quarry → Lewis Quarry; 1995-01-11 to 2004-06-13; source msha-controller-operator-history
- **controller_controls_mine:** Graymont Ltd → Lewis Quarry; 1995-01-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Graymont Ltd → Lewis Quarry; 1995-01-11 to 2004-06-13; source msha-controller-operator-history
- **controller_controls_mine:** Graymont Ltd → Lewis Quarry; 2004-06-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Graymont Materials (NY) Inc. → Lewis Quarry; 2004-06-14 to 2017-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Graymont Ltd → Graymont Materials (NY) Inc.; 2004-06-14 to 2017-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Upstone Materials Inc. → Lewis Quarry; 2017-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Colas S A → Lewis Quarry; 2017-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Colas S A → Upstone Materials Inc.; 2017-06-01 to current/open; source msha-controller-operator-history