The limestone rock began forming 350 million years ago from the remains ... he returned and worked in the quarry until it closed. The quarry began operations in 1917 or 1918, ended mining operations ...

As other Bay Area quarries closed, demand for the San Rafael Rock Quarry's rock and gravel grew, extending well past the county's original expectations that the quarry would cease operations in ...

Despite concerns from property owners, the Koochiching County Board Tuesday approved two rock quarry operation requests – one in the Moonlight Rock area and the other in Margie. On a 4-1 ...

Rock of Ages has attracted visitors since at least 1924, when the company built a “Retiring Room” for guests to observe the quarry in action, according to its website. It introduced tours in 1930. The ...

Two bills filed in the Texas House could have a big impact on the lasting impacts of rock quarries in the the state.

One plan to process gravel in Mora County seemed to be crushed earlier this week. But some residents are preparing for a rocky road ahead to block another proposal at the same site. PG Enterprises had ...

Liebherr emerged as first choice for an expanding quarry business as it searched for a single flagship excavator to replace a pair of ageing machines at a newly acquired hard rock operation ...

Crushing operations in Africa can look forward to a new set of digital services following Sandvik Rock Processing’s announcement at Electra Mining Africa 2024 that it is piloting its RMS – a digital ...