American Wood Protection Association Ballast, Ties, Rail Breaking News crossties News and Opinion Supplier News Track Structure Viance AWPA Standardizes DCOI for Additional Crosstie Wood Species Jennifer McLawhorn January 31, 2024 0 CHARLOTTE, N.C. – The American Wood Protection Association has standardized the use of DCOI for additional crosstie wood species. The post AWPA Standardizes DCOI for Additional Crosstie Wood Species appeared first on Railway Track and Structures.