Malachite green (LMG) is used as a detection method for latent blood in forensic science. Hemoglobin catalyzes the reaction between LMG and hydrogen peroxide, converting the colorless LMG into malachite green. Therefore, the appearance of a green color indicates the presence of blood. In 1992, Canadian authorities determined that eating fish contaminated with malachite green posed a significant health risk. Malachite green was classified a Class II Health Hazard. Due to its low manufacturing cost, malachite green is still used in certain countries with less restrictive laws for non aquaculture purposes. In 2005, analysts in Hong Kong found traces of malachite green
The Malachite Box of the miners and gold prospectors. After the initial publication, the author continuously added new stories to the collection, such as the so-called "mountain fairy tales" in 1942, "Stories of Germans" () in 1943, a series of stories about Russian steel-makers and coiners in 1944–1945, "Stories of Lenin" () in 1944–1945, and others. Every edition of the collection ended with the dictionary of unusual words and concepts. "The Watchhouse on Dumna Mountain" () was Bazhov's essay which served as an introduction to the first edition of "The Malachite Box". It contained some information about the life, industry and culture at