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Keywords: Mining
(Complete Item Description)
- Abstract: The Gold Rush, positive for California in so many ways, had a devastating effect on the state's environment. Many of these problems were directly related to gold-mining technology. The process of hydraulic mining, which became popular in the 1850s, caused irreparable environmental destruction. Two images show California's largest hydraulic mine ? Malakoff Diggings, in Nevada County ? in action. (Malakoff Diggings is now a state park and open to visitors.) Dams (such as the English Dam in Nevada County, shown in one photograph), which were constructed to help supply water to the mines during the dry summer months, changed the course of rivers. The sediment washed away by hydraulic mining clogged riverbeds and lakes, threatening agriculture throughout the Central Valley. Conflicts over water arose between mining and farming interests. Hydraulic mining essentially came to an end in 1884 with the Sawyer Decision, legislation passed to resolve this conflict. The mining industry also needed a great deal of wood, both to fuel the boilers at the mines and to build extensive canal systems. This demand for lumber helped create the logging industry. California's forests had plenty of trees to log, many quite large. The lithograph "The Stump and Trunk of the Mammoth Tree of Calaveras" depicts a society ball at which 32 people danced on the stump of a giant sequoia tree. Photographer Carleton E. Watkins was well known for his images of the grand views of the West. He was the first to capture Yosemite on film, and helped shape how people throughout the country and the world viewed California. He took many of the broad landscape photos in this group. Watkins also made use of the new technology of the day to create stereoscopic views, including the image of the Malakoff Diggings. There are also several Daguerreotypes in this topic. They include a portrait of John A. Sutter (at whose mill gold was first discovered); miners at work; miners with equipment; and general scenes of mining operations.
(Complete Item Description)
- Abstract: The images in this group offer a glimpse of daily life in California during the mid-1800s in big cities like San Francisco and in smaller, rural towns like Dixon and Nevada City. These photographs show some of the everyday people of the time, as well as the shops, saloons, and other establishments that served them.
Many people who came to California to strike it rich eventually abandoned their dreams of gold. They stayed in California and worked as farmers or merchants, relaxing in saloons or coffee houses and marrying and raising families. This group contains several portraits captured in Daguerreotypes and cased photographs that depict a variety of everyday people: a young Gold Rush widow in black mourning attire; a gold seeker with a pick axe, a pan, and a gun; and a farmer and wagon maker (who founded the town of Dixon in 1852), alongside images of his two children.
(Complete Item Description)
- Abstract: Broad coverage of technology concepts underlying modern computing and information management. Topics include computer architecture and operating systems, relational database systems, graphical user interfaces, networks, client/server systems, enterprise applications, cryptography, and the web. Hands-on exposure to internet services, Microsoft Access database management system, and Lotus Notes. Information Technology I helps students understand technical concepts underlying current and future developments in information technology. There will be a special emphasis on networks and distributed computing. Students will also gain some hands-on exposure to powerful, high-level tools for making computers do amazing things, without the need for conventional programming languages. Since 15.564 is an introductory course, no knowledge of how computers work or are programmed is assumed.
(Complete Item Description)
- Abstract: This Flash simulation shows copper mining and metallurgical extraction with alternative methods and uses of unit processes, especially emphasising the role and importance of new biotechnological alternatives (bioleaching).
- Subject:
Science and Technology
- Grade Level:
Secondary, Post-secondary
- Collection:
Individual Authors
(Complete Item Description)
- Abstract: In this video from the Science and Technology Chat series, take a tour of a re-created Nevada gold mine to learn about mining techniques.
- Subject:
Science and Technology
- Grade Level:
Primary, Secondary
- Collection:
Teachers' Domain
(Complete Item Description)
- Abstract: This unit is a teaching and learning resource for anyone interested in Welsh history. It contains study materials, links to some of the most important institutions that contribute to our understanding of the history of Wales, and a pool of resources that
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