 NBG is located in the Shire of Boddington, approximatelyn and 120 km southeast of Perth, Western Australia. The mine is Mile Brook (Figure 1). first commenced operations in 1987 care and maintenance in 2001.NBG is located in the Shire of Boddington, approximatelyn and 120 km southeast of Perth, Western Australia. The mine is Mile Brook (Figure 1). first commenced operations in 1987 care and maintenance in 2001.
Definition of NOVA. : a star that suddenly increases its light output tremendously and then fades away to its former obscurity in a few months or years.â noÂ·vaÂ·like \-vÉ-ËlÄ«k\ adjective.ADVERTISEMENT.efinition of NOVA. : a star that suddenly increases its light output tremendously and then fades away to its former obscurity in a few months or years. â noÂ·vaÂ·like \-vÉ-ËlÄ«k\ adjective. ADVERTISEMENT.
A helium nova (or helium flash) is a proposed category of nova explosion that lacks hydrogen lines in the spectrum. This may be caused by the explosion of a helium shell on a white dwarf.he time taken for a nova to decay by 2 or 3 magnitudes from maximum optical brightness is used to classify a nova via its speed class. A fast nova will typically take less than 25 days to decay by 2 magnitudes and a slow nova will take over 80 days.