The MLP's expansion initiatives continue to grow its volumes and earnings.Energy Transfer (ET -0.06%) has been on an acquisition binge. The midstream giant recently closed its nearly $3.1 billion purchase of WTG Midstream, which followed its $7.1 billion merger with fellow master limited partnership (MLP) Crestwood Equity Partners last November. On top of that, the company has continued to invest heavily in organically expanding its operations. Those investments helped fuel record volumes across several of ...