Some of TIFR's research groups focused on nuclear chemistry and metallurgy ; these were later moved to Trombay to provide the basis for a 1958 plan to integrate nuclear energy into the national power grid. By 1954, the Institute contained an in-house electronics production unit. Under Bhabha's leadership, the Institute established a research group under Bernard Peters ' supervision to conduct research on cosmic rays, and later geophysics. This group was the first to identify K minus strange particles.