RE:RE:RE:US Silica - "we are essentially sold out of sand proppant" US Silica - "we are essentially sold out of sand proppant" Per today's earnings release: "In our Oil and Gas segment, proppant and logistics demand improved sequentially, driven by stronger customer activity, particularly in West Texas. During the quarter, we also executed a number of contracts at improved prices as customers have been intent on securing proppant and delivery services for what is expected to be a very strong first half of 2022. Given these developments, we are essentially sold out of sand proppant."