Obyan Quarry, operated by Hawaiian Rock Products and a subsidiary of Jerrold Clay Johnson, supplies high-quality construction sand and gravel for various construction applications. Located in Northern Islands County, MP, accessible via Route 304 and Naftan Road, this surface operation provides convenient access to regional markets with reliable material supply backed by a team of 70 employees.
Operator
Hawaiian Rock Products
Parent Company
Jerrold Clay Johnson
Company Type
Corporation
600
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15.115833, -145.748611
Data Source
Mine Safety and Health Administration (MSHA)
Last updated: 1/30/2026
