Rock was employed as a "geophysical computer" in the petroleum industry, first at Rieber Laboratories, and then in 1938 at Herbert Hoover, Jr.'s newly formed United Geophysical Corporation.
She transferred into United's engineering and instrument subsidiary, Consolidated Engineering Corporation, when they began to develop the mass spectrometer as a commercial product.
The first 21-101 Mass Spectrometer was delivered in December 1942.
Sibyl Rock worked in the CEC research group with employees such as Harold Wiley, manager for Chemical Instruments, Harold Washburn, and Clifford Berry.
In 1947, she joined the sales department.
In sales, she worked closely with people at chemical and refining companies who were potential customers for the mass spectrometer and early digital computers, identifying their needs and concerns.
People such as Seymour Meyerson, who worked for Standard Oil of Indiana, were active contributors to Rock's CEC Users' Group.
Rock transferred again in 1952, to the organization's newly formed computer division.
As of 1953, she was "in charge of sales and application functions of the Computer Division" with the title "Acting Manager, Application Service" and was the first female sales engineer of ElectroData Corporation.
Rock was employed as a "geophysical computer" in the petroleum industry, first at Rieber Laboratories, and then in 1938 at Herbert Hoover, Jr.'s newly formed United Geophysical Corporation. She transferred into United's engineering and instrument subsidiary, Consolidated Engineering Corporation, when they began to develop the mass spectrometer as a commercial product. The first 21-101 Mass Spectrometer was delivered in December 1942. Sibyl Rock worked in the CEC research group with employees such as Harold Wiley, manager for Chemical Instruments, Harold Washburn, and Clifford Berry. In 1947, she joined the sales department. In sales, she worked closely with people at chemical and refining companies who were potential customers for the mass spectrometer and early digital computers, identifying their needs and concerns. People such as Seymour Meyerson, who worked for Standard Oil of Indiana, were active contributors to Rock's CEC Users' Group. Rock transferred again in 1952, to the organization's newly formed computer division. As of 1953, she was "in charge of sales and application functions of the Computer Division" with the title "Acting Manager, Application Service" and was the first female sales engineer of ElectroData Corporation.
Sibyl M. Rock