DUVALLS OSHA Part 1926 Subpart D, Section 1926.57 Ventilation, is set forth in our easy to read Multiple-choice Textbook study guide, example, workbook format. The text, tables, and figures have been enlarged for easy reading to reduce eye strain of the individual. The textbook is written specifically for the college, high school, GED student seeking valid information related to the difficult subject of United States Labor Laws and Regulations. This work is divided into the subparts set forth by OSHA, however, this Work shall not be used, stated, or otherwise implied that this Work is an official publication. This Work is an independent, copyrighted Work protected by United States Copyright Laws and International Copyright Agreements. This Work was created as a textbook, study guide, examples workbook for educational purposes. This Work is not a stand alone legal document.