Subsection 11 5 in SME Mining Engineering Handbook 1:11-56to11-60
This section on thermal drilling and chambering (jet piercing) of blastholes describes high-energy heating as a proven though relatively new method of preparing blastholes. Novel high-energy heat sources with the potential for drilling and disintegrating rocks are laser and infrared heaters, electron beams, plasma heaters, electrical heaters, and supersonic oxygen-fuel oil or compressed air-fuel oil burners. Supersonic "rocket" burners using oxygen and light petroleum-based fuel oil reactants have found wide acceptance for blasthole drilling, especially in some hard taconite formations.
Subsection 11.5 in SME Mining Engineering Handbook, Vol. 1, PP. 11- 56 to 11-60
We take your privacy seriously. You can review and change the way we collect information below.
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
Cookies used to make website functionality more relevant to you. These cookies perform functions like remembering presentation options or choices and, in some cases, delivery of web content that based on self-identified area of interests.
Cookies used to track the effectiveness of CDC public health campaigns through clickthrough data.
Cookies used to enable you to share pages and content that you find interesting on CDC.gov through third party social networking and other websites. These cookies may also be used for advertising purposes by these third parties.