Warning signs were erected in 2010 at Dalgety Bay after radium-226 particles with very high readings were found. "Although there is currently no evidence of Ra-226 contamination, due to the military history of RRDL, the presence of Ra-226 cannot be ruled out." The Ministry of Defence's £15 million clean-up operation at Dalgety Bay eventually began in 2021 and saw the removal of more than 12,000 radioactive particles. Babcock have been checking for radium-226 as part of their plans for a solar farm at Rosyth Dockyard. Chief executive officer, David Lockwood, recently said that by harnessing solar and wind power, the Rosyth site could become the "first large carbon zero shipyard".