

** The junior oil and gas producer's shares poised for biggest single-day gain since June last year after company says it received a 20-year productio...


* Says additional production tax costs of $10 mln * Extra costs amount to 25 pct of budgeted 2014 Ukraine capex * Shares fall as much as 12.5 pct (A...


Sept 22 (Reuters) - JKX Oil & Gas Plc said it would substantially reduce its capital expenditure to offset the impact of higher production taxes intro...