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.
Respondents: There has been an increase of 1 respondent (from 6 to 7). This is due to an increase in the Agency estimate of the number of mines affected.
Responses: There has been an increase of 2,970 responses (from 3,960 to 6,930). This is due to an increase in the Agency estimate of the number of mines affected and the addition of the burden for a supervisor to certify the inspection by countersigning.
Burden Hours: There has been a increase of 406 burden hours (from 1,980 to 2,386). This is due to the addition of the burden for a supervisor to certify the inspection by countersigning.
Cost: There has been an increase in annual costs of $1,600 (from $1,200 to $2,800). This is due to an increase in the Agency estimate of the number of mines affected as well as the addition of annual replacement costs for the pressure recording devices. Even though the cost to replace the pressure recording devices had not been previously included, MSHA has determined that they are necessary to perform the collection of information and therefore the cost should be included.
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.