| 2018-08-23 | C101 | Vulcan Lands, Inc. | State 100 percent reserved mineral interest school land (State Parcel Number 226-514)within the S1/2 of NE1/4 and N1/2 of SE1/4 of Section 36, T8N R3W, SBM, about ten miles southwest of Barstow | | | Min Res Lse | PRC 8253 | | San Bernardino | Renewal |
| 2008-03-25 | 86 | WEBBER-PLYLEY/DBA SIGMA STONE TO VULCAN LANDS
RESERVED MIN INTEREST SCHOOL LANDS SW OF BARSTOW MIN EXTRACT LSE ASSIGN 100%
INTEREST + AMENDMENT | | | | | P 8253 | | 36 | |
| 2007-12-03 | 33 | WEBBER-PLYLEY/DBA SIGMA STONE TO VULCAN LANDS
SCHOOL LANDS SW OF BARSTOW ASSIGN + AMEND MIN EXTRACT LSE | | | | | P 8253 | | 36 | |
| 2006-08-24 | 55 | WEBBER-PLYLEY/DBA
SIGMA STONE BARSTOW SCHOOL LAND AMEND MIN EXTRACT LSE | | | | | P 8253 | | 36 | |
| 2000-11-27 | 55 | WEBBER-PLYLEY INC
SCHOOL LAND STATE MIN EXTRACT LSE | W 40716 | | | | P 8253 | | 36 | |
| 2000-11-27 | 55 | SIGMA STONE CO SCHOOL LAND STATE MIN EXTRACT LSE | W 40716 | | | | P 8253 | | 36 | |
