In one or two previous reports, such as:
USDOE Evaluates Coal Hydrogasification Processes | Research & Development; concerning: "Analysis of coal hydrogasification processes; 1978; DOE Contract: EF-77-A-01-2565; Research Organization: Bechtel Corp., San Francisco, CA; Abstract: Bechtel Corporation has conducted a program to investigate the operability potential and scaleup feasibility of the Cities Service, Rocketdyne, Pittsburgh Energy Research Center (PERC), and Brookhaven National Laboratory coal hydrogasification processes. ... The hydrogasification stage has a configuration similar to the Rocketdyne reactor assembly";
we've made note of the development of Coal conversion technology by the California aerospace technology firm, Pratt & Whitney Rocketdyne, whose Coal hydrogasifiers are based on rocket engine technology.