Technology and engineering, 1995: p. 190 (Gunite, a proprietary name for dry-sprayed mortar used earlier, has fallen into disuse in favour of the more general term "shotcrete") https://es.wikipedia.org/wiki/Hormig%C3%B3n_proyectado

Rock support and reinforcement practice in mining, 1999: p. 219 (early use of shotcrete dates back to 1964 when gunite, a form of dry mix shotcrete, was used to stabilise pillars)

Transportation research thesaurus online, Feb. 16, 2009 (shotcrete: use for gunite)

Complete book of home inspection, 2002: p. 243 (shotcrete is premixed wet concrete; gunite is dry mix to which water is added as it exits hose)

Wikipedia, Feb. 18, 2009 (Shotcrete and gunite are two commonly used terms for substances applied via pressure hoses. Shotcrete is mortar or (usually) concrete conveyed through a hose and pneumatically projected at high velocity onto a surface. Shotcrete undergoes placement and compaction at the same time due to the force with which it is projected from the nozzle. It can be impacted onto any type or shape of surface, including vertical or overhead areas.)