The Balzac V was a VTOL demonstrator based on the very first Mirage-III prototype, the
Mirage III -01 from November 1956.
The Atar-101 was replaced by an Orpheus rated at 2200 kgp only, and... 8 RB-108 lift engines. This allowed only mach 0.9 and...12 minutes of fuel!
The plane flew for the first time in February 1962 proved quite useful and successfull but later crashed two times.
first crash was in February 1964, killing Jacques Pinier. The plane was repaired but a second crash in September 1965 killed Major Neale, an american pilot testing the aircraft. It was not repaired, as the much bigger Mirage IIIV were flying...
Henry Matthew has made a good book on the VTOL Mirages.