Entry and exit in Missouri's swine industry by medium to large producers, 1964-1968

Cover title

Missouri cattle feeding manual

"Cattle feeding is a big business in Missouri, but it has potential for becoming much bigger. This report gives information farmers need to help decide whether to enter or expand in this business. First, however, here is a brief sketch of the industry as it appears today."--First page.G.B. Thompson (Associate Professor of Animal Husbandry), Robert M. George (Associate Professor of Agricultural Engineering), and Robert M. Finley (Professor of Agricultural Economics)Includes bibliographical references

Socio-economic factors affecting the regional growth potential of the cattle feeding industry

"Publication authorized June 14, 1971

Economies of size in hog production

Also available online.Digitized 2007 AES MoU

The economy of the Central American Common Market : an update

Cover title."December, 1979."Includes bibliographical references (pages 26-27)

Extrapolation of Gas Reserve Growth Potential: Development of Examples from Macro Approaches

An analysis of infield completions and reserve growth potential was made in Tertiary non-associated gas reservoirs in South Texas. Infield well completions were defined from a concurrent GRI project involving macro-scale prediction of reserve growth. This report validates 78 percent, or 5.6 Tcf, of a high-end infill estimate of 7.2 Tcf for nine stratigraphic units in South Texas. This is a significant resource volume given the historical expectation that natural gas can be efficiently drained with widely spaced wells (1 or 2 per square mile) in conventional reservoirs. Groups of infield completions, or reservoir sections, from Frio, Vicksburg, Wilcox, and Miocene reservoirs were examined using geophysical well logs and production and pressure analyses. Seven reservoir-section types that contributed to the macro reserve growth estimate were evaluated. About 20 percent of the estimate consists of gas volumes extrapolated using consolidated reservoir groups, cycled reservoirs, and reservoirs with invalid data. Additional gas volumes in the estimate were extrapolated from reservoir sections representing rate acceleration. The estimate also includes reservoir volumes from the low-permeability Wilcox Lobo trend, where limited drainage radii lead to expected reserve growth. Volumes that represent within-reservoir reserve growth and volumes that represent shallower- or deeper-pool reservoirs determined not to be in pressure communication with preceding completions in a reservoir section formed most of the macro reserve growth estimate.Bureau of Economic Geolog

A 1974 survey of large-scale hog production in the U.S.

Cover title

The Impact of Changing Net Returns on Minimum Energy Requirements For Grain Farms

With sources of energy more restricted and higher priced, optimal combinations of enterprises must logically be considered on the basis of energy efficiency. One method of ascertaining this efficiency is to optimize solutions for given levels of income on the basis of energy used (e.g., the objective function was in terms of energy kilocalories). In general, soybeans were most feasible at lower levels of income regardless of farm size and labor circumstance. As income levels increased, double-cropping (wheat soybeans) was first substituted and finally corn at highest income levels

Component selection for livestock farms using linear programming

Also available online.Digitized 2007 AES MoU

Analysis of Negative Revisions to Natural Gas Reserves in Texas

Early problems in overestimating effective porosity in some deep Delaware Basin carbonate reservoirs in the Permian Basin, particularly in District 8, resulted in noticeable negative revisions once these issues were resolved. However, the net negative volume of revisions for the Permian Basin (Districts 8, SA, and parts of 7B and 7C) was nearly an order of magnitude less than that for the Gulf Coast Basin. The largest negative revisions of total natural gas reserves were concentrated in the Gulf Coast within Texas Railroad Commission Districts 2, 3, and 4. District 4, with the largest volume of negative revisions, accounted for 56 percent of all negative revisions in Texas for the period 1966-1979. The total for the three districts equaled that of the whole state for the same period. Negative revisions of non-associated gas reserves in Districts 2, 3, and 4 accounted for more than two-thirds of the total gas negative revisions for the entire state from 1966 through 1979. Large negative revisions were mainly due to a combination of interrelated factors. Among these, the original overestimation of natural gas reserves in the Texas Gulf Coast, fueled by optimism from market-related incentives, was significant. These estimates underwent insufficient critical review and reassessment, as supplies greatly exceeded demand. Continued high Reserves to Production (R/P) ratios into the 1960s further delayed reassessment. Technical variables such as water saturation, reservoir heterogeneity, and recovery factors, as well as non-technical variables including economic climate and regulatory controls, were analyzed. Concern should be raised regarding the quality of reserve estimates declared during times of excess supply, as these reserves would not have undergone the test of extended maximum demand. However, there have been more frequent reviews of actual recoverable reserves over the last five years. Continued careful review of technical factors and awareness of the impacts of economic and regulatory environment changes suggest that extensive negative revisions over the next 10 to 20 years can be avoided.Bureau of Economic Geolog