dust atmosphere in a sentence

1. For example, about a month after an outburst in October 2007, comet 17P / Holmes briefly had a tenuous dust atmosphere larger than the Sun.
2. It was felt the country air was a break from the polluted coal-dust atmosphere in the streets and congested air inside the jute mills in Dundee at the time.
3. Guidance on assessing the extent of the hazard is given in the NFPA 497 or NFPA 499 standards published by the National Fire Protection Association for explosive gas or dust atmospheres respectively, or RP 500 and RP 505 standards published by the American Petroleum Institute for explosive gas or dust atmospheres respectively, and IEC 60079-10-1 or IEC 60079-10-2 standards published by the International Electrotechnical Commission for explosive gas or dust atmospheres respectively.
4. Guidance on assessing the extent of the hazard is given in the NFPA 497 or NFPA 499 standards published by the National Fire Protection Association for explosive gas or dust atmospheres respectively, or RP 500 and RP 505 standards published by the American Petroleum Institute for explosive gas or dust atmospheres respectively, and IEC 60079-10-1 or IEC 60079-10-2 standards published by the International Electrotechnical Commission for explosive gas or dust atmospheres respectively.
5. Guidance on assessing the extent of the hazard is given in the NFPA 497 or NFPA 499 standards published by the National Fire Protection Association for explosive gas or dust atmospheres respectively, or RP 500 and RP 505 standards published by the American Petroleum Institute for explosive gas or dust atmospheres respectively, and IEC 60079-10-1 or IEC 60079-10-2 standards published by the International Electrotechnical Commission for explosive gas or dust atmospheres respectively.
6. It's difficult to find dust atmosphere in a sentence.