PPE: Respirator Usage and Safety. A respirator is a personal protective device that is worn on the face. It covers the nose and mouth and is specifically designed to provide respiratory protection by forming a tight seal against the wearerâs skin. Respirators vary in their level of protection and efficiency to filter out airborne particles.
In 2003, Columbia disintegrated over Texas while returning from a 16-day trip to space. Later analysis found that a small bit of foam insulation that broke off an external fuel tank during launch had torn a hole in the orbiter's wing and led to the disaster. Gene Grush recounts the events from NASA's perspective.
1990 â The Company's logo changes from three stars to energy flame.. 1991 â Columbia Gas and its wholly owned subsidiary, Columbia Transmission, file for protection under Chapter 11 of the United States Bankruptcy Code.lthough we've grown tremendously in more than 125 years of industrialization and progress, we never forget how we started: one customer at a time. Below is an overview of our history, from the chartering of Manufacturers Natural Gas Company to the latest at Columbia Gas of Pennsylvania.