Mine Safety Accountability and Improved Protection Act

[AI summary unavailable — showing source text] Mine Safety Accountability and Improved Protection Act - Amends the Federal Mine Safety and Health Act of 1977 to establish an independent National Mine Safety Board, which shall conduct an independent investigation of any coal or other mine accident involving three or more deaths. Authorizes the Board to issue subpoenas for the attendance and testimony of witnesses and the production of information. Directs each mine operator to require each of its miners to designate a next of kin or other representative to act on behalf of the miner who is entrapped or otherwise prevented by an accident from acting on the miner's own behalf during a mine inspection. Requires mine inspections to be conducted during various shifts and days of the week when miners are normally present. Prohibits an attorney from representing both a mine operator and a miner during an inspection, investigation, or litigation, unless such miner willfully waives all possible conflicts of interest. Requires the Secretary of Labor to issue regulations establishing certain initial screening criteria for determining whether to place a mine on pattern (of violation) status. Prescribes remediation requirements for mine oper…