The Letter Series and the Golden Years of IH. The F-series tractors lasted until 1939. In late 1939, the famous Letter series of Farmall tractors was introduced. The model name letters were A, B, BN, C (which replaced the B and BN in 1948), H, M, and MD(M diesel).
Japan has had a long history of earthquakes and seismic activity. It is an area of high seismicity because it is located near major tectonic plate boundaries and is situated on the Pacific Ring of Fire.n July 16, 2007, an earthquake measuring 6.6 M, the 2007 ChÅ«etsu offshore earthquake hit about 29 kilometres (18 mi) west of Niigata in the northwest Niigata region of Japan. ) was a powerful magnitude 6.6 earthquake The earthquake shook Niigata and neighbouring prefectures.
Japan is made up of over 3,000 islands, many of which are covered with mountains and forests. Japan is located within the Pacific Ring of Fire, meaning it lies along the edge of the Pacific tectonic plate. As a result, Japan has many volcanoes and earthquakes from the movement of the plates.Some of Japanâs active volcanoes are Unzen, Sakura-jima, and Asama. Mount Fuji is also a volcano, though it last erupted in 1707.he earthquakes resulted a tsunami with waves up to 40 meters high (133 feet), which destroyed many cities in Japan. Over 15,000 lives were lost in the Japanese earthquake and tsunami of March 2011.