lead. A metallic element, atomic no. 82, atomic wt. 207.2; occurs in nature as an oxide or one of the salts, but chiefly as the sulfide, or galena; 210 Pb (half-life equal to 22.6 years) has been used in the treatment of certain eye conditions.ead. A metallic element, atomic no. 82, atomic wt. 207.2; occurs in nature as an oxide or one of the salts, but chiefly as the sulfide, or galena; 210 Pb (half-life equal to 22.6 years) has been used in the treatment of certain eye conditions.
Revillo, South Dakota. (Redirected from Revillo, SD) Revillo is a town in Grant County, South Dakota, United States. The population was 119 at the 2010 census. The name of the town most likely was derived from a backwards spelling of the proper name Olliver.
The Jurupa Unified School District, nestled along the Santa Ana River, covers 47 square miles in Riverside County, enrolling more than 19,000 students. The district, which comprises 25 schools serving pre-kindergarten through 12th grade, evolved from a one-room adobe schoolhouse built in 1856.