The author first describes the present status and problems of industrial development and industrial location in whole Japan, and then refers to the grade of industrial development in Hokuriku District (Toyama, Ishikawa and Fukui Pref.), with special interest in the trends in the aluminum industrial complex (electrochemical and mechanical industries), and the petrochemical industrial complex (petrochemical and textile industries) together with their relations with those in Tokai and Kinki Districts.

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The annual extention rate of aluminium production in future would be greater than the mean rate of all industrial production, in Japan as well as in the world.
Japan aluminium industry would need to exploit or manufacture some overseas, bauxite, that would be planned with the co-operation of many aluminium companies, in oder to avoid risks.
Some new process of aluminium manufacture has been tested without success. Consequently, for the several years to come, aluminium industry would continue using the present process, with some improvements.

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The technology assessment consists of three stages; namely, perception, evaluation and control. Some possible procedures and difficulties in these stages are dis-cussed here. It is shown that the role of scientists and engineers is very important in any case.
The role of scientists and engineers is expected to be as follows;
1) They sufficiently understand the relationship between technology and society.
2) They have a through knowledge of the technology assessment.
3) They systematicaly grasp the mutual relationship among all technologies.

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As part of a serial research work for coal structure, the IR spectra of the pyridine extracts of 16 different ranks of coal were measured by KBr method; from which some information in comparison with that of the original coals were obtained as follows.
(1) Absorptions concerned with OH groups
The absorption coefficients both of 3, 450 and 1, 260 cm^-1, bands of the extract de-creased linearly, like that of the original coal, with the increase of the carbon content of the original coal.
(2) Absorptions concerned with aliphatic CH hydrogens
Two peaks appeared at Taiheiya and Yubari, similar to the case of the original coal, on the plot of the absorption coefficient of 2, 920cm^-1 band of the extract versus carbon content of the original coal, but rather higher coefficients were found in the extracts of lower-rank coals than in those original coal themselves. The absorption coefficient of 1, 450cm^-1 band of the extract decreased as the carbon content of the original coal increased. While the absorption coefficient of 1, 380cm^-1 band for the original coal had only one peak at Yubari, two peaks at Taiheiya and Yubari were found for that of the extract.
(3) Absorptions concerned with Aromatic CH hydrogens
In stead of Bibai from which appeared the absorption at 3, 030cm^-1 in case of the origi-nal coal, the band arose in the extract of a lower-rank coal, Takamatsu. In general, the absorption coefficient of 3, 030cm^-1 band of the extract increased with increasing carbon content of the original coal except at Itmann, and had somewhat larger value than that of the corresponding coal. The absorption coefficients of 870, 820 and 750 cm^-1 bands had quite similar trends with what were found in the original coal, though partial difference in the absorption coefficient of 750cm^-1 band was noted.
(4) The absorption band at 1, 600cm^-1
Whereas a lower coefficient compared with that of the original coal was seen for some lower rank coal extracts, no significant difference was found between the extract and the original coal for higher rank coals.
The conclusion drawn from IR spectra observation was that the extracts obtained from the coals lower in rank than Bibai were richer in aliphatic structures and that the extratcs from higher rank coals had structures quite similar to their original coals. The deviation shown by Itmann coal extract was ascribed to the behavior of resinous material which might be extracted more from this sort of coal than to the behavior of the coal itself.

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The present investigation of solid-liquid contact combustion was undertaken in order to discuss the mechanism of combustion reaction, using both the solid fuel that the fine powder of Sodiumamide is dispersed in Paraffin or Naphthalene as a binder and the liquid oxidizer of fuming Nitric acid. Ignition delay period and linear burning rate were measured with photodiode and combustion apparatus of pool type respectively. On the basis of analysing experimental results, the probable mechanism are summerized as follows.
1) Some differences of mechanism between Paraffin and Naphthalene system are confirmed. Accordingly, ignition delay period and burning rate are changed complicatedly.
2) The relationship between ignition delay period τi (msec) and Sodiumamide con-tent x (‰) is given by the expression, τi=Ae^-Bx, where A and B, empirical constants, are 50 and 0, 01 in the case of apparatus 1.
3) The rate determining step of combustion reaction is the diffusion through the fused zone exsisting in front of the burning surface.
4) The burning rate is related closely with the inclination of combustion pool and is in direct proportion to the 0.6-1.0th power of flow rate of oxidizer at the region of lower flow rates, independently of other factors. While the rate at the higher region is constant approximately, independently of flow rates.
5) The amount of residual Paraffin is determined experimentally, while it is also calculated theoretically on some assumptions related with combustion mechanism.

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