Arafura Resources Limited's ( ASX:ARU ) Gavin Lockyer says recent headlines around supply chain shortages for critical minerals and rare earths have really put the spotlight on its Nolans Neodymium-Praseodymium (NdPr) Project in the Northern Territory. He says what COVID-19 has done through factories being forced to close is highlight the supply shortages that could occur when supply chains aren't diversified. ''We're certainly seeing heightened interest and certainly heightened interest in our sector in particular'', he says.