US Government As Represented by the Secretary of the Army

Clifford E Grey

Philip Garcin Malone

Charles Arthur Weiss, Jr

Stafford S Cooper

Catherine S Stephens

Toy S Poole

Roland Fuentes

Jerry P Burkes

Larry Watkins

The method and system disclosed herein allow pressure profile data to be collected remotely from multiple autonomous sensors without entering the blast radius. The system obtains a GPS synchronized time value for detonation and obtains subsequent synchronized pressure data sets overtime from multiple independently functioning remote and correlates that data from each transducer with the initial detonation event.

Remote measurement of blast wave propagation

Portland cement particles having the characteristics of slow hardening is oduced by a process of heat treating portland cement particles in the temperature range from 1500.degree. to 3000.degree. C. for from 0.5 to 10 seconds and cooling to obtain particles containing an amorphous, glassy shell as an outside layer.

Heat treatment in the control of the setting of cement

A reagent carrying tape is captured between the soil and the outer wall of penetrometer. As the penetrometer moves with respect to the soil, the tape is pressed against an optical window in the penetrometer. Contaminants in the soil reacting with the reagents cause an optically sensible reaction in the tape to occur which is optically detected at the optical port as the penetrometer moves with respect to the tape and the soil sample. The optically sensible reaction occurring in the tape is optically isolated from the masking effects of the soil. A method is also disclosed.

Method and apparatus for in-situ detection and determination of soil

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Vicksburg, MS, United States of America

Clifford E Grey