John and Martha Jansen enjoy the views of the San Gabriel Mountains from the second-floor deck of their Duarte home. The couple are worried the proposed mining operation will compromise children’s health and damage wildlife. (Christina House / For The Times)
Charros exercise their horses near the mountains. Mining company Vulcan Materials wants to move an operation to 80 acres that border Duarte. (Christina House / For The Times)
A view of Azusa Rock, where Vulcan Materials has mined for decades. The large pyramid steps, left, in the face of the mountain would be prohibited under the new proposal. (Irfan Khan / Los Angeles Times)
Plant supervisor Jasen Tally walks along a section of micro-benches, which would be used under the new mining plan. (Irfan Khan / Los Angeles Times)
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Todd Priest, a Vulcan spokesman, says some people appear to have lost sight of the issue: It’s not whether mining will occur -- it will -- but where. (Irfan Khan / Los Angeles Times)
