What happen when the concrete slab beneath your home cracks adjectives the instrument around?
It could be serious. There could be a mine shaft under your house. you better achieve a county engineer. He would hold access to the mine maps and be capable of tell you if the mineral rights be ever sold to a mining company.
This is bad communication. You will need to carry a foundation repair company out ASAP. When your home starts settling unevenly adjectives the way around, your drywall will crack, doors won't shut properly, and you can even hold roof problems.
One way to avoid cracked slabs is to preserve the perimeter evenly watered contained by dry weather. Dry soil pulls away from the slab and the result is a crack.
Answers: Get it checked by a contractor who specializes in foundations. Get it repaired first. The sooner the better. Cracks tend to get bigger over time and could organize to leaks surrounded by your first floor.
I agree with 'mblastguy'. Contacting you city or county plot is a good plan. You hold already paid him next to your tax dollars. He/she could report to you how serious teh problem is and how to remedy it.