Other flooring is made from inch-thick mahogany which dented the tools of electricians and telephone mechanics who attempted to string new wiring in the 1950s.
Originally a bound book that resembled a telephone directory, it contains the name and addressees of licensed radio stations in a given jurisdiction (country).
It has been heavily exploited for its strong, dark red, resinous wood, which is useful for the construction of buildings, bridges, boats, and telephone poles.