Court of Justice of the European Communities — Procedure — Intervention — Conditions for admissibility of — Statute of Court of European Coal and Steel Community, Article 34 — Effect of making application to intervene — Language in which application to be drawn.

International organization — European Goal and Steel Community — Treaty establishing Community, Articles 67 and 4 (c) — Prohibition of State subsidies — Government-sponsored shift bonus to German coal face miners — Legality of — Whether affected by coal enterprises’ obligation to pay Government contribution to miners’ welfare funds — Failure of High Authority to declare action of German Government to be in violation of Treaty — Respective competence of Authority and member States in matter of subsidies — Whether competence of Authority limited to powers conferred on it by member States — Interpretation of Articles 67 and 4 (c) by reference to intention of parties.