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Railway Tie Association (RTA) plans to hold its 2003 Tie Grading Seminar July 27-29 at Koppers Inc.'s Roanoke, Va., plant.


Instructors will conduct field exercises on such topics as untreated wood deterioration, tie storage and handling, identifying wood species, treating technology, determining defects and "practical aspects" of tie grading, according to a prepared statement.


Koppers will provide a plant tour, including crosstie and switch-tie inspection, handling and storage facilities, and sorting, end-plating, boring and dappling operations.


The tour will focus on treating efficiencies gained from Boultonizing ties, or drying wood by heating it in a non-aqueous solution under vacuum.


For more information, call 770-460-5553 or visit the association's Web site at www.rta.org.