Question: How many people are employed by the laboratory across from McKenzie, Maryland?
Related documents: [0]  [DOC] Allegany Ballistics Laboratory (ABL) located in Rocket Center, West Virginia, is a diverse industrial complex employing some 1,000 people across 1628 acre . The facility is a member of the Federal Laboratory Consortium and is operated by Alliant Techsystems (ATK) under contract with the Naval Sea Systems Command (NAVSEA). [END] 
[1]  [DOC] McKenzie is an unincorporated community in Allegany County, Maryland, containing only a few houses, and mostly land. Its name is derived from a family which owned a large farm along the river bottom in the area. It is directly across from the Allegany Ballistics Laboratory in Rocket Center, West Virginia. The area used to be a railroad junction of the Patterson Creek Cutoff and the main B&O line. McKenzie is also the site of one of the first settlements in Allegany county, where many pieces of glass, metal, stone, and some coin have been found. In the fields of the river bottom, arrowheads and flint can be found, suggesting a possible Native American community at one time, similar to the Barton, Maryland site. [END] 
Answer: 
some 1,000
some 1,000