(Source: Getty Images Bank) The National Pension Service has shelved a plan to introduce negative screening on coal miners and relevant businesses aimed at building a low-carbon portfolio, which failed to get the nod from its top decision-making body on Friday. But the committee endorsed the South Korean pension scheme's decision to authorize its investment division heads to proceed with small-size alternative deals worth up to $100 million respectively, without reporting to its CIO Ahn Hyo-joon, compared to the current threshold of $50 million. On the proposed negative screening, the 20-member committee supervising the NPS' Investment Management department, chaired by Welfare Minister Kwon Deok-chul, was almost evenly divided, according to the committee sources.