Practical study materials for the Hazardous Materials Handler examination. - Title: Pass in 10 Days! Class 4 Hazardous Materials Handler - Author: Toshihiro Motoyama - Publisher: TOOLBOX - Features: Exam preparation book for Hazardous Materials Handler Thank you for viewing. This item was previously purchased on Mercari, so the memorization notebook and red sheet are not included. Studying is still possible, and I was able to obtain the certification using this book.