2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/180334PROZA-M experiment results as well the proposal of a new spin program with the use of a polarized proton beam are presented. Significant asymmetries were observed in inclusive $π^0$ production. The new program proposes to study a wealth of single- and double-spin observables in various reactions using longitudinally and transversely polarized proton beams at U70. The main goal is to define gluon contribution to nucleon spin by measuring double-spin asymmetry in charmonium production.18 pages, 20 figures, Talk given at Advanced Study Institute Symmetries and Spin (July 19 - 26, Prague, Czech Republic)High Energy Physics - Experimenttext