Short answers, pulled from the story.
The Lunar Sample Laboratory Facility is a repository and laboratory at NASA's Lyndon B. Johnson Space Center in Houston, Texas. It was opened in 1979 to house and study geologic samples returned from the Moon by the Apollo program missions.
The facility holds 75 percent of the 382 kilograms of lunar material returned by the Apollo program, comprising rocks, core samples, pebbles, sand, and dust from six missions. Scientific processing has produced more than 110,000 individually cataloged samples from the original 2,200 specimens.
Earlier facilities at Johnson Space Center, including the Lunar Receiving Laboratory completed in 1967, could process current-mission samples but lacked storage and processing capacity for accumulated material from previous missions. Concerns about hurricane vulnerability and the risk of keeping all samples in one location also drove the creation of a new, purpose-built facility.
Samples are handled through multi-layered gloves inside stainless steel cabinets filled with high-purity nitrogen, which is continuously monitored for oxygen and moisture. All building materials were screened to exclude problematic chemical elements, air is filtered and kept at above-atmospheric pressure, and staff wear cleanroom suits. Samples from different Apollo missions are never processed in the same cabinet.
52 kilograms of the 382-kilogram Apollo lunar sample collection are stored at the White Sands Test Facility. This offsite reserve was originally kept in an ammunition bunker at Brooks Air Force Base in San Antonio from 1976, then moved to White Sands in 2002 when Brooks was transitioned out of military control.
The Genesis Rock is among the most notable samples, determined to be nearly as old as the Moon itself. The facility also holds Big Muley, the largest single sample returned from the lunar surface by any Apollo mission.