Joint recycling of drilling sludge and phosphogypsum with obtaining a building material is environmentally appropriate and cost-effective. as it helps not only to prevent environmental pollution. but also to solve the problem of rational nature management. Drilling sludge is a waste formed during drilling oil wells. https://www.roneverhart.com/Apple-Watch-Ultra-2-GPS-Cellular-49mm-Titanium-Case-with-Blue-Black-Trail-Loop-S-M-MRF53LL-A/