Russian gold miner Highland Gold posted an 18.9% rise in half-year revenue to $174.7-million, reflecting the contribution from its newly acquired Valunisty mine and increased sales volumes at its Mnogovershinnoye (MNV) operation. Earnings before interest, taxes, depreciation and amortisation (Ebtida) increased by 21.8% on the prior-year period to $86.5-million, while the Ebitda margin was stable at 50%, compared with 49% a year earlier.