But the categories may be inappropriate for a risk analysis. The constituents of the cost figures must be known. Accurate cost information, in a form that is compatible with a risk analysis, is essential for assessing financial risk. Minimills that have not melted nuclear devices have expected costs too, but the estimates are poorly founded. Table 11 is a summary of the sources of information for developing the inputs of the steel mill analysis.
Shaded cells indicate that information is available.
Numbers in cells refer to survey questions in Appendix C. Letters in cells are notes following the table about the information or lack thereof. White cells of the table indicate that a particular class of information for a particular element is unavailable at a reasonable cost. Nuclear gauges allow industries to conveniently and precisely control processes that otherwise would be difficult to control. Although they are physically a minuscule part of production, for many industries gauges are critical for making high-quality products with less risk from the processes themselves. Use of nuclear gauges also have consequences.