An investigation into blasting fumes and re-entry times at Cannington mine.

Dwyer, David (2004). An investigation into blasting fumes and re-entry times at Cannington mine. B.Sc Thesis, School of Engineering, The University of Queensland.

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Author Dwyer, David
Thesis Title An investigation into blasting fumes and re-entry times at Cannington mine.
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 2004
Thesis type B.Sc Thesis
Supervisor Stewart Gillies
Total pages 90
Language eng
Subjects 091404 Mineral Processing/Beneficiation
091405 Mining Engineering
Formatted abstract

The use of explosives in routine development blasting produces noxious gases, namely carbon monoxide, nitric oxide and nitrogen dioxide. All gases are potentially harmful to workers, with inspectorates reporting several cases of ‘fuming’ per year. In order to mitigate the risk of workers being over come by fumes, acceptable safeguards and process should be put in place. Assisting mine workers in taking a diligent approach to the management of risks associated with blasting fumes.     

Despite that fact that after blast re-entry times have been identified as one of the potential safety and health problems introduced by the advancement of mining technology (Fisher, 1995), insufficient research has been undertaken to establishing suitable productive after blast re-entry times in order to prevent worker exposure to potentially harmful blasting fumes. This apparent lack of scientifically based and repeatable means of determining re-entry times following blasting is a matter of serious concern.      

The objective of this thesis is to further investigate the dilution characteristics these noxious gases produced in one or two discrete development headings, which are ventilated via auxiliary ventilation fans and face ducting, and determine suitable re-entry times. Additionally, monitoring and logging of fumes will continue during the course of mucking in an attempt to further understand fume behaviour during this process.     

Through the use of portable gas monitoring equipment, auxiliary equipment and an established testing procedure a two week testing regime was conducted at Bhpbilliton’s Cannington Mine. During this time seven development firing tests and two mucking tests were completed. 

Keyword Blasting fumes
re-entry times
noxious gases
Carbon Monoxide
Nitric oxide
Nitrogen dioxide (NO2)

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
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Created: Thu, 24 Apr 2014, 16:48:21 EST by Nicole Rayner on behalf of Scholarly Communication and Digitisation Service