From foreword: "This report presents summary information on coal development in the United States, and material on the potential interactions of that development with fish and wildlife resources."

This document presents the total scope of the framework for the U.S. Coal Project during fiscal years 1976 through 1980. The project was initiated to provide information for appropriate involvement of the Fish and Wildlife Service in U.S. coal development actions.

The purview of H-Division is the mechanics of fluids and solid bodies. Concise status reports of the projects undertaken by the various groups in the division are given. Representative topics studied include equations of state of various materials, fracture mechanics, penetration of armor by projectiles, turbulence generation, and the development of dynamics computer codes. 31 figures, 2 tables. (RWR)

The strength and toughness of a high energy rate formed (HERF'ed) stainless steel, as influenced by the heat input from a variety of welds, are being measured. Using holographic interferometry, a welded spherical pressure vessel constructed from HERF'ed stainless steel with a composition of 21 percent Cr, 6 percent Ni, 9 percent Mn, 0.23 percent N, balance Fe was examined. Holographic examination of the weld vicinity shows that plastic deformations in the heat affected zones reach a maximum at a distance of 5 mm on either side of the weld, and tails off for another 20 mm to zero strain. The yield and ultimate strengths of the heat affected zones, based on the thin wall relation and using the wall thickness just above the weld, is nearly that of the parent material. However, the mode of deformation indicates that if the heat affected zones were either of higher strength or narrower, the pressure vessel would be stronger. Several more vessels are being electron beam welded using different weld parameters, and these will be examined to determine how the strength of the vessel is affected.

A subject screening list was developed which would be used by acquisitions specialists as a guide to the orientation of pertinent literature. The subject screening list was derived primarily from the geothermal subset of the ERDA Energy Thesaurus and from the ERDA Energy Information Data Base Subject Categories (TID-4584). The subject screening list is included. Subsequent to preparation of the subject screening list, a core list of serial publications containing geothermal energy information was generated by SIS library scientists. This list was corelated with the ERDA-TIC serial publications list. Included in both lists is an estimate of the annual geothermal information yield of the serial sources. A listing of sources of geothermal energy information other than serial publications and the conclusions, including methods of acquisitioning to be utilized and the estimated annual volume of information from all sources are presented.

The feasibility of stacking beam in a storage ring by the phase displacement technique, i.e. by the accumulation of momentum strips, is determined by a complicated interplay of many factors. Some of these factors are discussed, especially as they relate to stacking beam in the Fermilab doubler ring, but no attempt is made to present a consistent solution. An arbitrary division is made into five subject categories connected with the stacking process: (1) momentum dilution, that is, the dilution of the longitudinal phase space area; (2) rebunching the stack for acceleration; (3) the physical aperture used to create a stack of given current; (4) beam loss during stacking in a superconducting environment; and (5) field errors due to random errors in the placement and support of the superconducting coils, including the amplification of the field errors for orbits displaced from the magnet center. The basic theory is given and applied using doubler parameters.