Answer:
US Chemical Safety & Hazard Investigation Board (CSB)
Explanation:
The U.S. Chemical Safety Board (CSB) is an independent, nonregulatory federal agency that investigates the root causes of major chemical incidents.
The CSB conducts root cause investigations of chemical incidents at fixed facilities.
Answer:
Inked rubbings
Explanation:
Inked rubbing was first found by Chinese people before the seventh century to make other print of old records by the use of paper and ink. Rubbing is also called squeeze the ink. With the help of this ink, squeeze make other copies and distributed them in considerable numbers. This technique was developed simultaneously in china.
So that in the above context that another theory focuses on the practice of making inked rubbing from the inscription carved in stone
