They are looking into a dividend paid by Kumtor to Centerra in 2013, which the miner says complied with the country's laws and 2009 agreements governing the project.
The niobium and phosphates division, which consists of mines, plants, processing facilities, chemical complexes and deposits, was one of Anglo’s more profitable businesses.
Current oil oversupply could reverse within 20 years as low oil prices have forced pricers to slash spending on exploration and production, a report by Wood Mackenzie shows.
The board of trustees said they didn't believe in divesting from the fossil fuel industry until there are competitive and readily available alternatives.