This analysis demonstrates the differential ways that flash photographs were employed to represent the dynamics between mining administration and labour at the Quicksilver Mining Company in New Almaden. This is accomplished via a comparison of two series produced by pairs of amateur photographers in 1887 and 1888—a moment of heightened tension, or a “flash point,” in the region. I argue that the respective literal and rhetorical technologies animating each pair’s flash photographs reveal the power of the mining industry to be the ultimate driver of photographic practice in the region. Two photographs, created twelve days apart at New Almaden in 1888 by a pair of amateurs, were made using a dynamo-blasting machine to set off lightning flash powder. Used in mining to break up rock underground, the machine was here used to literally power a photographic purpose. Significantly, the photographs contrast in depicting a scene of leisure among company management in the first instance, and labouring miners in the second, creating a sense of juxtaposition between these two classes. Alongside these images, I analyse the photographs of another contemporaneous pair of amateurs at New Almaden, who produced an entire suite of views, including underground magnesium flash photographs, by 1887. Their photographs were published in a volume issued as a legal exhibit in the trial of California vs. Felton, concerning the allegation that management coerced voters—comprised largely of mercury miners—to vote against their will. Their photographs metaphorically occlude tensions between these groups.