In a nutshell, acid mine drainage is a form of water pollution that happens when rain, runoff, or streams come in contact with rock that is rich in sulfur. As a result, the water becomes very acidic and damages downstream aquatic ecosystems. In some regions it is the most common form of stream and river pollution.
Probate in Washington typically takes six months to a year, depending on some choices the executor makes (discussed below). It can take much longer there is a court fight over the will (which is rare) or unusual assets or debts that complicate matters. Unless there is a dispute, it's mainly a matter of filing paperwork.
The deadline for filing a proof of claim for non-governmental creditors in a Chapter 7 or Chapter 13 bankruptcy case is 90 days after the first meeting of the creditors. Government entities must file a proof of claim within 180 days after the date of the order for relief.