A complaint for compensation under section 111 of the Act, 30 U.S.C. 821, shall be filed within 90 days after the beginning of the period during which the complainants are idled or would have been idled by the order that gives rise to the claim.

A complaint for compensation shall include:

(a) A short and plain statement of the facts giving rise to the claim, including the period for which compensation is claimed;

(b) The total amount of the compensation claimed, if known; and

(c) A legible copy of any pertinent order of withdrawal or, if a legible copy is not available, the text of the order.

Within 30 days after service of a complaint for compensation, the operator shall file an answer responding to each allegation of the complaint.