Municipality of Guysborough [Member] Municipality of Guysborough. Martin Marietta Materials Canada Limited [Member] Martin Marietta Materials Canada Limited. C A - N S Sand / Gravel / Stone / Open Pit [Member] CA - NS sand/gravel/stone/open pit. CA-NS/sand/gravel/stone/Open Pit [Member] Martin Marietta Materials, Inc [Member] Martin Marietta Materials, Inc. U S - U T / Sand / Gravel / Stone / Open Pit [Member] US - UT/sand/gravel/stone/open pit. US-UT/sand/gravel/stone/Open Pit [Member] CANADA US-W Y / Sand / Gravel / Stone / Open Pit [Member] US-WY/sand/gravel/stone/open pit. US-WY/sand/gravel/stone/Open Pit [Member] Canada Revenue Agency [Member] Canada Revenue Agency. UNITED STATES Canada Revenue Agency - Federal [Member] Canada revenue agency - federal. Department of Treasury [Member] Department of treasury. Bureau of Land Management [Member] Bureau of land management. U S - C O / Sand / Gravel / Stone / Open Pit [Member] US - CO/sand/gravel/stone/open pit. US-CO/sand/gravel/stone/Open Pit [Member] Sand / Gravel / Stone [Member] East group. West Group [Member] Sand/gravel/stone. West Group East Group [Member] West group. East Group