 The order controlling Massey's investigations into the disaster was placed on Massey immediately after the incident by the (MSHA)when it seized control of the coal mine six hours after the blast on April 5.%DIFDELCMD < %DIFDELCMD < %%% MSHA's controls prohibited Massey from "taking or retaining photographs, collecting and preserving mine dust samples, employing mine mapping technology, and participating in or objecting to any destructive testing of materials gathered underground."
<coherence>  The order controlling Massey's investigations into the disaster was placed on Massey immediately after the incident by the (MSHA)when it seized control of the coal mine six hours after the blast on April 5.%DIFDELCMD < %DIFDELCMD < %%% MSHA's controls prohibited Massey from "taking or retaining photographs, collecting and preserving mine dust samples, employing mine mapping technology, and participating in or objecting to any destructive testing of materials gathered underground."
 %DIFDELCMD < %DIFDELCMD < %%% MSHA's controls prohibited Massey from "taking or retaining photographs, collecting and preserving mine dust samples, employing mine mapping technology, and participating in or objecting to any destructive testing of materials gathered underground."