Keystone Surveying & Mapping Inc. (KS&M) is headquartered in Washington County, Pennsylvania. KS&M provides land surveying se ... rvices to both the public and private sectors. KS&M is well positioned to support the surveying and mapping requirements utilized in the development of the Marcellus Shale natural gas formation as well as the region's forecasted economic growth. KS&M specialize solely in the practice of land surveying. KS&M is a leading provider of professional surveying services throughout Pennsylvania, Ohio, West Virginia and New York. KS&M expertise, implementation of modern surveying equipment using Trimble R8 GPS receivers and the VRS networks, and the dedication of our employees are employed to meet each of our clients expectations. KS&M also excels in all aspects of the modern surveying profession, including boundary & topographic surveys, GPS surveys, construction stake-out and pipeline surveys. KS&M services is managed by professional land surveyors who have a high level of experience, integrity and proficiency. KS&M assures every client that we care about your projects and want to be part of your team effort to complete projects safely, quickly and within budget. read more