Surroundings of mines and metallurgical enterprises in the Armenian province of Lori is likely to be contaminated by dangerous chemicals, especially copper. According to analyzes, its level exceedes legal and hygienic limits. The industrial enterprises in question are located in mere proximity to people's homes. "The level of dioxins found in samples from Alaverdi exceeds both European and Armenian standards, in some cases up to five times," Jitka Straková, expert on toxic substances commented the research on environmental pollution of Alaverdi, Akhtala and Teghut. Czech scientists further investigated the content of hazardous substances in soil, river sediments, sand from playgrounds and human hair.