he Special Coal Court of Delhi on Thursday convicted all accused in a case related to alleged irregularities in allocating a coal block in Chhattisgarh. The case involved former Rajya Sabha lawmaker Vijay Darda, his son Devender Darda, ex-Coal Secretary H C Gupta, two senior public servants K S Kropha and K C Samria, M/s JLD Yavatmal Energy Pvt Ltd and its Director Manoj Kumar Jayaswal.