Complex sentence: In 1913 he began working alongside his father at Mine No.2 in the Shcheglovskogo Coal Mine as a coal sorter, and in 1914 Lyudnikov became a drainage pump worker.
Split into simpler sentences: In 1913 he began working alongside his father at Mine No.2 in the Shcheglovskogo Coal Mine. In 1914 Lyudnikov became a drainage pump worker.