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Caterpillar building 'mine site of the future' at Tucson Proving Ground
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Caterpillar building 'mine site of the future' at Tucson Proving Ground

  • Feb 16, 2023
  • Feb 16, 2023 Updated Nov 16, 2023
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Tucson's Top Stories: April 15
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VIDEO: Arizona punter Chase Ridley talks about what he misses most about Australia
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VIDEO: Arizona DL coach Joe Salave'a on the state of UA's D-Line, being 'meticulous' about recruits
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2026-04-09T122029Z_1_LWD113809042026RP1_RTRWNEV_D_1138-IRAN-CRISIS-EXPLOSIVE-MEDIA.MP4
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Tucson's Top Stories: April 17
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Tucson's Top Stories: April 19
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VIDEO: UA special-teams coach Craig Naivar on turning down 'the outside noise'
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Tucson weather forecast for April 18

See how Caterpillar is transforming its Tucson Proving Ground into an all-electric mining site with solar, wind and energy storage. 

As featured on

Caterpillar building 'mine site of the future' at Tucson Proving Ground

Caterpillar building 'mine site of the future' at Tucson Proving Ground

Heavy-equipment giant Caterpillar is testing electric haul trucks and renewable energy and storage for mine sites at its Tucson Proving Ground.

Tucson-based Asarco, unions back to bargaining table

Tucson-based Asarco, unions back to bargaining table

Tucson-based copper producer Asarco LLC and unions representing more than 1,700 of its workers in Arizona and Texas are back at the bargaining table.

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AP top stories for April 20

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Women take the lead in whiskey as more female drinkers and distillers change the industry

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Tucson International Mariachi Conference coming soon

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2-week ceasefire between U.S. and Iran set to expire Tuesday

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VIDEO: UA baseball players willing to do 'anything to help the team win'

Arizona Daily Star on this date: April 20

Arizona Daily Star on this date: April 20

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Tucson weather forecast for April 20

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Tucson's Top Sports Stories: April 20

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