{"action":"create","ckan_id":null,"date_created":"Mon, 30 Mar 2026 11:21:01 GMT","date_finished":null,"harvest_job_id":"d7da3388-1018-4ba5-9021-fc07af61a934","harvest_source_id":"3dddf3ae-84a3-4731-88b4-6a0b57d0e503","id":"44226658-26cb-43ee-9c47-65c5eb3152af","identifier":"https://datainventory.usbr.gov/rise/item/11460","parent_identifier":null,"source_hash":"5f6651ef23c54e0cb7c0a2c4b5afdbc9a57e52cd59d7f76481fbd6cbe50f9f75","source_raw":"{\"accessLevel\": \"public\", \"accrualPeriodicity\": \"irregular\", \"bureauCode\": [\"010:10\"], \"contactPoint\": {\"@type\": \"vcard:Contact\", \"fn\": \"RISE Team\", \"hasEmail\": \"mailto:data@usbr.gov\"}, \"description\": \"Reclamation has used natural pozzolans for large dams in the past. Trends in the market made fly ash a more preferable choice as a supplementary cementitious materials for decades. As the future supply of fly ash becomes less predictable, concrete producers are more interested in other pozzolans including natural pozzolans. This report summarized Reclamation\\u2019s history with using natural pozzolans and proposes sites to extract cores to assess the long-term durability of concrete made with calcined shales.\", \"distribution\": [{\"@type\": \"dcat:Distribution\", \"accessURL\": \"https://data.usbr.gov/catalog/4618/item/11460\", \"description\": \"Landing page for \\\"S&T Project 21201 Final Report: Durability of Concrete Containing Natural Pozzolans\\\"\", \"mediaType\": \"text/html\", \"title\": \"RISE Item Details Page URL for \\\"S&T Project 21201 Final Report: Durability of Concrete Containing Natural Pozzolans\\\"\"}, {\"@type\": \"dcat:Distribution\", \"description\": \"\\\"S&T Project 21201 Final Report: Durability of Concrete Containing Natural Pozzolans\\\" as a PDF file\", \"downloadURL\": \"https://data.usbr.gov/rise/content-rise-public/rise/catalog-item/binary/Final Report ST-2021-21201-01.pdf\", \"mediaType\": \"application/pdf\", \"title\": \"PDF File for \\\"S&T Project 21201 Final Report: Durability of Concrete Containing Natural Pozzolans\\\"\"}], \"identifier\": \"https://datainventory.usbr.gov/rise/item/11460\", \"keyword\": [\"Concrete Durability\", \"Natural Pozzolans\"], \"landingPage\": \"https://data.usbr.gov/catalog/4618/item/11460\", \"modified\": \"2021-09-29T22:17:50Z\", \"publisher\": {\"@type\": \"org:Organization\", \"name\": \"Bureau of Reclamation\"}, \"spatial\": \"{\\\"type\\\":\\\"Polygon\\\",\\\"coordinates\\\":[[[-124.508,48.197],[-124.304,40.096],[-117.02,32.608],[-103.405,29.136],[-93.466,30.77],[-94.692,38.939],[-97.279,48.946],[-122.67,48.946],[-124.508,48.197]]]}\", \"title\": \"S&T Project 21201 Final Report: Durability of Concrete Containing Natural Pozzolans\"}","source_transform":null,"status":"error"}