A trilateral trade pact between the two Koreas and Russia is expected to gain momentum with the second trial run of the joint railway project as early as this month.A government official told local media that the date is being arranged in conjunction with Korean and Russian business officials and the test run will get underway by no later than May.The so-called Rajin-Khasan project was proposed in 2013 to facilitate economic cooperation among the three countries.The coal will be transported from Russia's border town of Khasan to the North Korean port city of Rajin via a 54-kilometer cross-border railway.It will then be shipped to South Korea's southeastern port city Pohang, the home of the country's largest steelmaker POSCO.The first trial run took place in November, with more than 40-thousand tons of coal on one ship.This time, twice the amount of coal will be transported on two ships.Also, officials are planning to bring in coal from a Russian mine that is closer to Rajin cutting the distance by more than half.But there are concerns about the timing of the second trial.Officials had originally planned the second trial for January or February to ensure frozen coal could be transported from rail to ship, but disagreements over the date caused a delay."To operate in the winter, there needs to be more investment in thawing equipment and more investment to generate profit."The project is the first part of President Park Geun-hye's Eurasia initiative for construction of a new Silk Road railway connecting the Korean Peninsula, China and Russia.Connie Kim, Arirang News.