Patent for a dirigible airship for aerial navigation, "to provide the balloon or gas bag with aeroplanes which serve to steady the balloon during the flight of the ship, and to increase the lifting power of the balloon when the ship is under motion, the arrangement being such as to enable said aeroplanes to be converted into a parachute, should the balloon or gas bag become deflated" (lines 20-28).

Partial abstract: "The study consisted of field and laboratory investigations, construction evaluation, and geotechnical and structural analyses to determine the cause(s) of distress and failure of a 2600-ft section of 12-ft 9-in. diameter concrete-lined sanitary sewer tunnel in the Detroit, Mich., area. [...] The report includes summaries of all pertinent construction records, results of all pertinent past and current field and laboratory tests on construction and geotechnical materials, and detailed geotechnical and structural analyses based on observed conditions and measured parameters."

None

Report issued by the U.S. Bureau of Mines discussing the operation and production of the Ward Sand and Gravel Company in Oxford, Michigan. The methods and costs employed by the company are presented. This report includes tables, and illustrations.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Fort Wayne quadrangle in Indiana, Ohio, and Michigan.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Fort Wayne quadrangle in Indiana, Ohio, and Michigan.

Patent for a new and useful cutting mechanism for harvesters or mowers. This design is to "provide a ball-bearing for the cutter-bar which shall support the same so that it will not have a sliding contact with its support" (line 18 - 22).