CAVING-IN, COLLAPSE, SUBSIDENCE, ETC
- Section 661 - Mining so as to cause collapse of certain structures or places prohibited
- Section 662 - Maps and plans of workings or excavations; deposit with mayors or county commissioners; public records
- Section 663 - Designation and marking of coal pillars
- Section 664 - Access by municipal officers to mines
- Section 665 - Mining where pillars not designated; preventing mining in violation of act
- Section 666 - Exceptions from operation of act
- Section 667 - Violations of act; penalty
- Section 668 - Restraining violations of act
- Section 669 - Construction of act
- Section 670 - Partial invalidity of act
- Section 671 - Time of taking effect of act