REUTERS Natural gas reserves in Ukrainian underground storage facilities (USFs) on May 26 – June 2 rose by 4.1%, or 378 million cubic meters, from 9.301 billion cubic meters to 9.679 bcm. Some 57.35 bcm of gas was injected into the USFs as of June 2, according to the state-run gas transport system operator Ukrtransgaz. As reported, the country&#39;s USFs are filled by 31% as of today, June 4. Read alsoNaftogaz attacks Gazprom&#39;s assetsAs UNIAN reported earlier, on April 13, 2018, Ukrtransgaz stopped pumping gas from storage facilities and began injecting it in the amount of 19-28 million cubic meters per day. Ukraine started 2018 with 14.7 bcm gas in its USFs, which was the largest gas stock as of the beginning of the year in the past five years.