For decades, artisans in Moradabad’s brass products cluster have breathed air laced with pollutants and toxic gases. Working mostly out of their backyards with traditional open melting furnaces that spew zinc vapours and other flue gases into the air, the cluster’s inhabitants are prey to asthma and tuberculosis. In mid-2012, three research scientists from the National Metallurgical Laboratory (NML) in Jamshedpur dropped in to observe their working methods. Visits from scientists and NGOs are fairly routine but this was the first time a CSIR (Council of Scientific & Industrial Research) network lab was getting involved. “We found that most of the artisans were reluctant to give up methods that previous generations had been using,” says KL Sahoo, principal scientist, CSIR-NML. Back in Jamshedpur, they came up with a few concepts based on improved technologies developed in-house and invited some of the artisans over to take a look. “They rejected our designs right away,” says Sahoo. “We had designed a standing furnace, while they were used to sitting and working.” It was clear that the new furnace would have to be a modification of the widely-used existing one.