advance wave

advance wave

[əd′vans ‚wāv]
(mining engineering)
The air-pressure wave preceding the flame in a coal dust explosion.
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References in periodicals archive ?
An advance wave of 54 writers, reporters and tour operators arrived several days before the conference and experienced southwestern and northwestern Arkansas via what the industry calls "familiarization tours." Two groups visited DeGray, Hot Springs, Mount Magazine, Altus, Petit Jean, Heifer Village and nearby attractions.
"We tend to be on the advance wave of things that are going to influence things." Happy anniversary, Unity - and may there be many, many more of them.
* A flanged tolerance ring with an advance wave configuration that is fitted between the tubes and retained by the outer tube while the inner tube slips axially inside the ring.
New York City is suffering the advance wave of a national diabetes epidemic, according to a chilling series in The New York Times earlier this year.
A rock star's look has always been the advance wave of his or her sound, the early-warning system of what is about to reach your ears.
With a stationary garrison and a mobile scout, Pathfinder is just the advance wave of an intelligence-gathering force that was to have included Russia's Mars 96.