Mast (botany) some domestic animals consume. Mast is found in two forms. Mast is generated in large quantities during mast seeding events (or masting, mast events). Mast seeding is a population-level phenomenon that is hypothesized to be driven by economies of scale, weather, and resources. These pulses of resources drive ecosystem-level functions and dynamics. Tree species such as oak, hickory, and beech produce a hard mast—acorns, hickory nuts, and beechnuts. It has been traditional to turn pigs loose into forests to fatten on this form of mast. Other tree and shrub species produce a soft mast, such as raspberries, blueberries, and greenbriar.
Warsaw radio mast slowly deteriorating. Eldorado do Sul RBS Radio Mast, a mast radiator in Eldorado do Sul, Brazil, is a nearly perfect replica of Warsaw Radio Mast with 35.5% of its height. Warsaw radio mast The Warsaw Radio Mast was the world's tallest structure from 1974 until its collapse on 8 August 1991. It was the second tallest structure ever built, being surpassed as tallest by the Burj Khalifa, completed in 2010. The mast, which was designed by Jan Polak, was tall. Its construction, started in July 1970, was completed on 18 May 1974, and its transmitter entered regular service on 22