Introduction.- Exploiting Quench Dynamics in Spin Chains for Distant Entanglement and Quantum Communication.- Extraction of Pure Entangled States from Many-Body Systems by Distant Local Projections.- Scaling of Negativity of Separating Blocks in Spin Chains and Critically.-Universality of the Negativity in the Lipkin-Mechkov-Glick Model.- Conclusions and Outlook.- A. Diagonalisation of the XX Model.- B. Factorisation of the Fermionic Correlation Functions.-...