The invention is a dust feed device for delivery of a uniform supply of dust for long periods of time to an aerosolizing means for production of a dust suspension. The device utilizes at least two tandem containers having spiral brushes within the containers which transport the dust from a supply to the aerosolizer means.

Coal (or other carbonaceous matter, such as biomass) is converted into a product gas that is substantially free from hydrocarbons. The coal is fed into a solar reactor, and solar energy is directed into the reactor onto coal char, creating a gasification front and a pyrolysis front. A gasification zone is produced well above the coal level within the reactor. A pyrolysis zone is produced immediately above the coal level. Steam, injected into the reactor adjacent to the gasification zone, reacts with char to generate product gases. Solar energy supplies the energy for the endothermic steam-char reaction. The hot product gases flow from the gasification zone to the pyrolysis zone to generate hot char. Gases are withdrawn from the pyrolysis zone and reinjected into the region of the reactor adjacent the gasification zone. This eliminates hydrocarbons in the gas by steam reformation on the hot char. The product gas is withdrawn from a region of the reactor between the gasification zone and the pyrolysis zone. The product gas will be free of tar and other hydrocarbons, and thus be suitable for use in many processes.

A radioactive hot cell access hole decontamination machine is disclosed. A mobile housing has an opening large enough to encircle the access hole and has a shielding door, with a door opening and closing mechanism, for uncovering and covering the opening. The housing contains a shaft which has an apparatus for rotating the shaft and a device for independently translating the shaft from the housing through the opening and access hole into the hot cell chamber. A properly sized cylindrical pig containing wire brushes and cloth or other disks, with an arrangement for releasably attaching it to the end of the shaft, circumferentially cleans the access hole wall of radioactive contamination and thereafter detaches from the shaft to fall into the hot cell chamber.

Photograph used for a story in the Oklahoma Times newspaper. Caption: "She had a fourth place in the state 100-yard dash last year"

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Victor hatley, Moore High School sophomore, puts finishing touches on a drawing which will be entered in the annual Industrial Arts Contest at Central Mid-High, 400 N Broadway, Moore."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Oklahoma County District Judge Joe Cannon"

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Bob Busch of Norman, tournament chairman, and celebrity golfer Linda Cavanaugh choose their clubs for the benefit tournament."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "The Rogers' contract stated: "Make all necessary repairs to (basement) windows and place in good operable condition."

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The ever-flattening skeleton of the Two Galleria office building, at Park and Harvey Avenues, has been rising steadily in downtown OK City."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Fair spring weather has allowed construction to continue uninterrupted recently on the Two Galleria project in downtown OK City."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "A completed house stands behind the foundation for a second new house in the JKF Redevelopment Area."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The ever-flattening skeleton of the Two Galleria office building, at Park and Harvey Avenues, has been rising steadily in downtown OK City."

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Officer Wayne Owen, a 13 year veteran with the police department, opens the door to his new patrol vehicle - a $4,000 scooter designed to patrol residential neighborhoods during the day."