Main fans for all underground metal and nonmetal gassy mines must have pressure-recording systems. The fans are required to be examined daily while operating if persons are underground. The pressure-recording systems indicate whether the fans are in good operating condition. The pressure recordings are required to be kept one year.
The number of responses, respondents and hours decreased due to a decrease in the number of mines. The slight increase in costs reflects the increase in current market prices.
On behalf of this Federal agency, I certify that the collection of information encompassed by this request complies with 5 CFR 1320.9 and the related provisions of 5 CFR 1320.8(b)(3).
The following is a summary of the topics, regarding the proposed collection of information, that the certification covers:
(i) Why the information is being collected;
(ii) Use of information;
(iii) Burden estimate;
(iv) Nature of response (voluntary, required for a benefit, or mandatory);
(v) Nature and extent of confidentiality; and
(vi) Need to display currently valid OMB control number;
If you are unable to certify compliance with any of these provisions, identify the item by leaving the box unchecked and explain the reason in the Supporting Statement.