The objective of this study is to find out what kind of industrial sphere is formed, how organically the regions are united within the industrial distribution in North Kyushu (cities) and next, in what types of regional conditions exist and how their characters are structured, because the industries are yearly transformed in their kinds and in their business conditions, but in the industrial zone they are generally more and more brought up to better location and are in the tendency of bringing the regions to further development and expansion. The results of my study are as follows
1. In the industrial distribution there are industrial nuclei such as metal, chemical ceramic, cement and so on, being united and piled up by a huge nucleus (1 st stage metal industry) to form the North Kyushu industrial zone (140 km) with the increase of population. Its industrial sphere is structured with three basic types of heavy industry, heavy chemical industry and light industry. Besides, in their developing locations there can be seen three types of iron and steel industry, correlated industries and 3 individual industry locations accompanying 24 industrial groups and 14 auxiliary industries.
2. Such types of industrial sphere is formed with regional conditions peculiar to this industrial zone. That is, (1) the types of port-harbor-shore location based on the traffic and transportation, (2) types of power and fuel source location, and (3) labor source location. Therefore, such conditions have structured the zone bringing about the phenomena of concurrence, coexistence and connections of seaside industry or regional polymerization.
It may be said, therefore, that the form of this industrial sphere of this zone is formed with 3 basic types and 24 industrial groups and 14 auxiliary industries different from other 3 big industrial zones in our country, each of them unifying the regions. The types of regional conditions, based on the above mentioned phenomena, have become the conditions forming the locations factor peculiar to each city, but they are the special phenomena often seen in the interdependence of zonal industrial locations.

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