Higgins J. Shuttleworth S.E.H.
Year:
1958
Bibliographic info:
Colliery Engng. vol 35. p483-487

Describes method of measuring air flow in mines using nitrous oxide as a tracer gas. Examines two methods of measuring airflow, releasing a continuous stream of a gas and releasing a known quantity of gas. Describes laboratory study andunderground tests of method. Concludes that technique is reliable and accurate.