Turkish Stones - Presentation of the Istanbul Mineral Exporters’ Association (IMIB). Includes directory of stones and producers, events and an online 3D rendering application. Elberton Granite Association - Trade association of granite quarriers and manufacturers in the United States. Includes a membership directory, granite facts and a granite museum . Indiana Limestone Institute of America (ILI) - Serves the construction industry as a coordinating agency for the dissemination of information on standards, recommended practices, grades, colors, finishes, and all technical data required for specifying, detailing, fabricating and erecting limestone. Marble Institute of America - Promote the use of natural stone and provide a source of information on the standards of workmanship and practice and suitable application of stone products. National Building Granite Quarries Association, Inc. - Information on architectural granite quarrying and uses. Promoting excellent granite production and marketing. British Aggregates Association - Represents quarry owners in the aggregates and minerals industry offering advice and lobbying parliament on aggregates levy, road haulage industry and minerals waste. Includes members directory, publications, news and events.